Derm Exam #2 Flashcards

1
Q

Anagen

A

Normal active hair growth phase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Catagen

A

Degenerative phase when hair growth stops - brief transition in which it detaches from blood supply

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Telogen

A

Resting phase of hair - no nourishment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Exogen

A

Hair fall out

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

4 hair growth phases

A

Anagen
Catagen
Telogen
Exogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Life cycle of scalp hair length

A

2-8 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Life cycle of leg hair length

A

5-7 months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Life cycle of arm hair length

A

1.5-3 months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Life cycle of eyelash length

A

4-6 weeks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Lanugo hair

A

Soft fine fetal hair

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Vellus hair

A

Peach fuzz - colorless hair that covers the body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Intermediate hair

A

Characteristics of vellus and terminal hair - appears on scalp

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Terminal hairs

A

Thick, pigmented hair on scalp, bear, etc.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Hair pull test

A

Scalp is gently pulled - greater than 5 pulled is pathologic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Trichogram

A

Anagen to telogen ratio
Normal 80-90% in anagen phase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

MC alopecia

A

Androgenic
Male or female pattern baldness -terminal becomes vellus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Alopecia classification for men, for women

A

Men -Norwood Hamilton
Women -Ludwig-Savin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Female pattern baldness

A

Hairline out - MC after 50

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Dx for androgenic alopecia

A

Telogen phase and atrophic follicles on bx
Increase in telogen hairs on trichogram
Hormone studies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Tx for androgenic alopecia

A

Minoxidil (Rogaine)
2-5% BID must be continued long term

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Finasteride

A

Oral androgenic alopecia medication for men only

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Female alopecia pharm

A

Spironolactone to block DHT

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Alopecia areata

A

Usually a fam hx
Damage to follicle in anagen phase
Leads to rapid transformation to catagen and telogen
No scarring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Presentation of alopecia areata

A

Bald patches
No scaring or atrophy of skin
Black dots on surface “exclamation hairs”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
AA Totalis
Total loss of terminal scalp hair
26
AA universalis
Total loss of all terminal body and scalp hair
27
Ophiasis
Bandlike pattern of hair loss over periphery of scalp
28
AA of nails
Fine pitting "hammered brass" of dorsal nail plate
29
Dx for alopecia areata
Usually clinical to r/o: Biopsy RPR - Syphillis KOH - FUngal ANA - Autoimmune Thyroid
30
Course of alopecia areata
Majority have spontaneous remission Poor prognosis for early onset
31
Non-pharm Tx for alopecia areata
Psych, Wigs, Hair pieces, No cure
32
Topical Pharm tx for alopecia areata
Class 1 or 2 CS with minoxidil - 5% Anthralin - see heair growth in 2-3 months NOT USED on face
33
Systemic pharm for alopecia areata
Short term Pred 20-40mg daily, taper over a few weeks
34
Keratosis pilaris
Hyperkaritinazation of the skin and keratotic follicular plugging 50-80% of all adolescents
35
Presentation of keratosis pilaris
Plucked chicken skin Becomes worse in winter - patients may pick/scratch - not always itchy 1-2mm raise papules
36
Dx of keratosis pilaris
Clinical dx Biopsy for atypical presentation
37
Tx for keratosis pilaris
Hydration - gentle soap and moisturizers (Cetaphil, Lubriderm, Rx - Lac-Hydrin)2-3xd Steroid creamor salicylic acid BID to reduce inflammation if needed
38
Lunula
Nail bed dital to cuticle
39
Onychocryptosis
Nail grows into the side of the paronychium(nail bed) MC in males in their 20s
40
MC toe for onychocryptosis
Great toe
41
Tx for onychocryptosis
Warm soaks Mupirocin BID until healed Proper trimming Training - cotton Surgery
42
Tx post nail removal
Keep clean with soap and water Mupirocin Resume activity in 48-72 hours
43
Onychomycosis
AKA Tinea unguium Fungus invades the nail
44
Presentation of onychomycosis
Asymptomatic MC complaint - discoloration Thickening and lifting from nail bed
45
RF for onychomycosis
Age Fam hx Poor health Trauma - very active Communal bathing/no shower shoes
46
Dx for onychomycosis
r/o melanoma if pigmented dark bands esp in caucasian Nail clipping or scraping - biopsy clipping, KOH scraping
47
Tx for onychomycosis
Topical or oral antifungal - Ciclopirox or Efinconazole Daily for 48 weeks 50/50 apple cider vinegar and water 10 minutes per day
48
Terbinafine for onychomycosis
6 weeks for fingers 12 weeks for toes Monitor liver May take up to a year for nail to grow back
49
Onycholysis
Detachment of nail from nail bed Trauma, Psoriasis, HSV
50
Presentation of onycholysis
Gray to black = Air Green = Bacteria No inflammation and smooth nails
51
Dx for onycholysis
Clinical
52
Tx for onycholysis
Treat underlying cause
53
Paronycia
Inflammation of the proximal or lateral nail fold Cellulitis to abcess MCC trauma 2nd MCC bacteria
54
MC bacteria of paronychia
MCC - Staph Green = Pseudomonas
55
Presentation of acute paronychia
Painful, Swollen, Tender, Erythematous, Pus
56
Dx for paronychia
Gram, C&S, KOH, etc.
57
Tx for acute paronychia
Warm soaks 3-4x daily until resolution I&D if fluctuant Consult hand surgeon
58
Oral abx for acute paronychia
When: Cellulitis, DM, Peripheral vasc disease, Immune comp Augmentin 10 days ALT: Clinda or Keflex
59
Presentation of CHRONIC paronychia
From repeated exposure Inflammation waxes and wanes Pain Swelling 6+ weeks
60
Tx for chronic paronychia
Avoid triggers Keep dry Avoid manipulation Warm antiseptic soaks Topical antifungals (oral if severe
61
Herpetic whitlow
Distal involved herpes HSV-1 or gingivostomatitis in children from sucking thumb/finger HSV-2 Adults - healthcare workers
62
Presentation of herpetic whitlow
Burning and pruritis followed by vescicular eruption Clinical dx - can use a Tzank smear
63
Tx for herpetic whitlow
NO I&D Self limiting - 3 weeks Contagious OTC pain meds Acyclovir/Valacyclovir
64
Felon
Soft tissue infection of the pulp space of the distal phalanx Hx of penetrating injury, splint, paronychia
65
Presentation of Felon
Pain, Swelling, Erythema, Tenderness, Abcess usually in thumb or index finger
66
Complications of a Felon
Osteitis, Osteomyelitis, Septic joint, Tenosynovitis
67
Workup for felon
Gram stain with C&S Tzank to r/o herpetic whitlow XR
68
Management for Felon
Augmentin for 10 days Surgical decompression
69
Nail clubbing
Due to persistent hypoxic state
70
Disorders that may cause nail pigmentation changes
Melanoma of the nailbed, P-J or L-H syndromes
71
Disorders causing nail pitting
Psoriasis or eczema
72
Diseases that cause splinter hemorrhages
Endocarditis, Vasculitis, Lichen planus
73
Terry's nails
2/3 of nailbed appears whit with pink apex Liver disease or HIV
74
Horizontal ridges/dents in one or more finger/toe nails
Zinc or iron deficiency
75
Actinic keratosis
Precancerous epithelial lesions on sun exposed areas of the body - light skin types
76
Presentation of actinic keratosis
Rough - sand paper keratotic lesions Barely elevated Felt more than seen Sun exposed areas May be tender/pigmented
77
Risks of Actinic keratosis
Risk of developing into non-melanoma skin cancer
78
Dx for actinic keratosis
Clinical - refer to derm if unsure - biopsy Dermoscopy - erythema with pseudo-network around hair follicles Classic gritty feel
79
Tx for actinic keratosis
Liquid nitrogen to freeze
80
Suspicious actinic keratoses
Lesions that keep coming back Painful or tender
81
Patient Ed for actinic keratosis
Counsel on sunscreen and sun avoidance Moisturizer with sunscreen 30+ SPF Mineral based is best
82
Tx for actinic keratosis
Cryosurgery Curettage Shave excision
83
Topical Pharm for actinic keratosis - 4
5-Fluorouracil - MC 2-4 weeks Imiquimod - 16 weeks Picato - 2 days $$$ Diclofenac - 90 days
84
MOA of 5FU
Blocks DNA synthesis = aptoptosis and selective cell death
85
Dosing and SE for 5FU
BID for 2-4 weeks Localized skin reaction - gonna happen!!
86
Imiquimod MOA
Immune modulator Stimulates local cytokine induction
87
Use for imiquimod in actinic keratosis
Non hypertrophic AK on face or scalp
88
SE of imiquimod
Localized skin reaction -increased clearance rates Wash hands!!!
89
Ingenol mebutate (picato) MOA and facts
Disrupts cell membrane followed by neutrophil cytotoxicity - 2 step AK ONLY Risk of SCC
90
Diclofenac MOA
COX-2 inhibitor - inhibits prostaglandin synthesis Localized skin reaction is less severe than other agents
91
Field therapy for Actinic Keratosis
Less cost effective - needs a specialist Cryopeeling, dermabrasion, chemical peels, Laser resurfacing, photodynamic
92
Actinic keratosis tx algorhythm 2 visits
1st visit - lesion targeted tx 2nd visit - f/u in 2-3 months, biopsy if recurrent, target if new, field therapy if numerous
93
THird visit follow up for Actinic Keratosis
6-12 months if lesion targeted 3-6 months if field therapy
94
Squamous cell carcinoma
Malignancy of cutaneous epithelial cells on sun exposed areas of the skin May be proceded by actinic keratoses, HPV
95
Area with a greater risk for SCC metastasis
Oral mucosa or lip
96
Presentation of SCC
Thicker and more keratotic than AK Hard, painful, come in many shapes and sizes Bleed easily Sun exposed or HPV areas
97
Risk factors for SCC
Chronic sun exposure Low fitzpatrick Skin grafts Age HPV
98
SCC in dark skin
May occur in scars - still happens!!
99
SCC in situ
SCC confined to the epidermis AKA Bowens disease More common in transplant/AIDS patients
100
Dx of SCC
Dermoscopy - Red vessels as dots, Scale/Crust, Shiny white structures Coiled vessels Keratin pearl - orange ovoid Gray brown dots in pigmented Biopsy if concerning
101
PE for SCC
Examination of refional lymph nodes
102
Histopathological findings suggestive of SCC - 4
Pleomorphic SC with variable nuclear size Overlying parakeratosis Kertinocyte mitoses Dyskeratosis
103
Management for SCC
Excision with narrow margins (3-5mm) is choice Mohs or 6mm borders in high risk lesions
104
Tx for SCC in non-surgical candidates
Electrodessication with curretage - leaves large circular scars Radiation for very large
105
Pharm for SCC
Imiquimod 5FU
106
Patient ed for SCC
Watch for suspicious lesions - scars w/o trauma SPF 30+ sunscreen No tanning beds
107
Keratoacanthoma
Fast growing solitary SCC variant Craterioform - volcano shape Treat quickly -Mohs excision
108
Basal Cell Carcinoma
MC Skin Cancer Neoplasm of basal keratinocytes Sun exposed areas Mostly a cosmetic issue - not frequently metastatic
109
5 types of BCC
Nodular Ulcerating Infiltrating Pigmented Superficial
110
Presentation of nodular BCC
Pearly papule Well defined borders Smooth and firm with telangiectasias May have erosions
111
Presentation of ulcerating BCC
Translucent pearly smooth, firm, telangiectectic +/- elevated borders - rat eaten
112
Presentation of sclerosing BCC
Scar like plaque with pink/white with ill defined borders
113
Presentation of superficial BCC
Thin patch or plaque Pink/Red +/- scaling
114
Presentation of pigmented BCC
Firm papule/Nodule with or without umbilication Smooth pearly surface Pigmented or stippled
115
Prognosis for BCC
Really good - 3/5 will develop another one - follow Non-healing or bleeding needs workup
116
Dx pearls for BCC
Sun exposed areas More than one under 30 may mean nevoid BCC syndrome or ionizing radiation exposure Larger than they appear
117
Histological findings suggestive of BCC - 4
Nests and cords with peripheral pallisading and central hahazard arrangement Hyperchromic nuclei and scant cytoplasm Marked solar elastosis Apoptotic neoplastic cells
118
Patient ed for BCC
Sun protection Follow with provider Watch for suspicious lesions
119
Non-pharm tx for BCC
Cryosurgery, Moh's - high risk area or large lesion (over 2cm)
120
Hedgehog pathway drugs for BCC
end in ~degib Hedgehog pathway inhibitors (Vismodegib, Sonidegib)
121
Common melanocytic nevi
Benign overgrowth of skin cells Congenital or Acquired - often regress by 60
122
Presentation of common melanocytic nevi
Asymptomatic Symmetric Sharp borders Uniform color
123
Dx for common acquired nevi
Dermoscopy
124
Indications for nevi excision
Scalp, anogenital, or mucosal Rapid change Irregular borders Erosions Persistent itching
125
Dysplastic melanocytic nevus and presentation
Precursor to superficial spreading melanoma Asymptomatic Irregular shape Sharp and ill defined borders Variegated color Maculopapular
126
Dx for dysplastic melanocytic nevi
Usually clinical - biopsy if needed
127
Tx for dysplastic melanocytic nevi
Observation Surgical excision with biopsy if changing or can't be observed
128
F/u for dysplastic nevus
3 month if fam hx of melanoma 6-12 months if sporadic
129
Patient ed for dysplastic nevi
Monthly self exams Skin exams for family members
130
Melanoma
Aggressive malignancy of color producing cells
131
4 types of melanoma
Superficial spreading - MC Nodular melanoma Lentigo maligna melanoma Acral lentiginous melanoma - LC
132
Risk factors for melanoma
Over 25 nevi Blistering sunburn before puberty Tanning beds Immune suppression
133
Presentation of melanoma
De novo (more common) or precursor from existing lesion Radial growth then vertical growth leading to metastasis
134
Superficial spreading melanoma
Assymetric macule with variagated pigment trunk in men or LE in women MC
135
Nodular melanoma
Dark brown bluish-black nodule that grows rapidly May bleed/ulcerate Trunk, head, or neck
136
Lentigo maligna melanoma
Assymetric brown to black macule or patch with color variegation and irregular borders SLOW GROWING Begins more weel defined
137
Acral lentiginous melanoma
Assymetric brown to black macule - palms, soles, nail apparatus
138
ABCDE of melanoma
A - Asymmetry B - Borders C - Color D - Diameter E - Evolving
139
Ugly duckling rule
Look for the Nevi that is not like the others on a patient with many lesions
140
Punch v. Shave biopsy
If you can punch the whole thing punch, if it is large - shave
141
3 ways to stage melanoma
Clark - Levels I-V (Epidermis, Dermisx3, Fat) TNM Staging Breslow
142
Need for Sentinel lymph node biopsy in melanoma
Breslow stage over 0.76
143
Margins for melanoma excision
0.5 cm for in situ 1 cm for under 1mm 1-2 cm for 1-2mm 2cm for over 2 mm May depend on area - use slow Mohs for difficult area
144
When to refer melanoma patient
BCC or SCC - Every 6 months Hx of Melanoma - every 3 months
145
Mohs micrographic surgery
Excisional procedure that allows for real time evaluation of tumor margins Indicated for SCC and BCC Spares healthy tissue
146
High areas for Mohs
Mask of face, genitalia, tops of hands and feet
147
Moderate risk Mohs areas
Rest of head, shins
148
Excisional biopsy/Excision
Cure rates not as good as mohs Indications - Well defined BCC and low risk SCC
149
Punch biopsy
Punch and remove - creates oval Apply in circular twisting motion Suture or cauterize CI in aftive infection
150
Three types of UV light
UVA - Passes through window glass UVB - Most burns does not pass through window glass UVC - Absorbed by the ozone All age the skin!!
151
SPF meaning
Ratio of burn with sunscreen v. without (ie. SPF 15 takes 15 times longer to burn)
152
Pityriasis Rosea
Acute exanthemous eruption -single herald plaque Becomes generalized later Herpes 6 and 7
153
Presentation of pityriasis rosea
Herald patch to general - oval or slightly raised Salmon red General exanthem with marginal collarette Christmas tree pattern Rarely involves face
154
Dx of pityriasis
NOT ON FACE usually
155
Tx for pityriasis rosea
Spontaneous remission in 6-12 weeks Oral antihistamines Topical anti-pruritic (Sarna) Triamcinolone Oral prednisone
156
Lichen planus
Acute or chronic Idiopathic - Believed to be CD8/CD45Ro cells Exposure to metals?
157
Presentation of lichen planus
4P's Polygonal or oval papules - annular, purple, pruritic Violaceous white lines - Whickham striae - grouped or disseminated Ciggarette paper skin
158
Location of lichen planus
Wrist, Lumbar, Shin, Scalp, Glans penis, Mouth
159
Hypertrophic LP
Large thick plaques
160
Atrophic LP
White, bluish well demarcated papules and plaques with central atrophy
161
Follicular LP
Follicular papules and plaques that lead to cicitricial alopecia
162
Vesicular LP
Bullous pemphigoid w/ LP
163
Pigmentosus LP
Hyperpigmented dark brown macules in sun-exposed area and flexural folds
164
Actinicus LP
Papules in sun exposed areas
165
Ulcerative/Erosive LP
Therapy resistant spots = ulcers
166
LP in mucous membranes
40-60% have mouth involvement
167
Reticular lichen planus
Lacy white hyperkeratosis on buccal mucosa, lips, tongue, gingiva
168
Dx and course for LP
Months to years Biopsy extremely helpful for dx
169
Tx for LP
Topical steroids w/ triamcinolone 1st line Under occlusion for cutaneous lesions
170
Systemic tx for LP
Cyclosporine or prednisone Retinoids as adjunct
171
Granuloma anulare
Chronic condition of the dermis Self limited MC in females
172
Presentation of granuloma anulare
Skin colored or red-brown Shiny beeded papules Hands, feet, elbows, knees Looks like tinea
173
Condition often associated with granuloma annulare - should be checked for it by PCP
Diabetes
174
Dx of GA
Clinical but biopsy is diagnostic
175
Pathological findings for GA
Foci of chronic inflammatory and hastocytic infiltrations in superficial and mid dermis Necrobiosis of connective tissue surrounded by pallisading histocytes and multinucleated giant cells
176
Tx for GA
Not always necessary - 70% go away in two years Topical triamcinolone ILK Cryo may resolve but leaves scarring (worse with dark skin
177
Erythema nodosum
Common acute inflammatory/immunologic reaction pattern of the SQ fat Infection, Drugs, Inflammation, Sarcoidosis
178
Age of onset and MC gender for erythema nodosum
20-30 years old Females more common
179
Presentation of erythema nodosum
Painful, tender, fever, malaise, arthralgia (esp. ankles)
180
Lesions of erythema nodosum
Indurated, red nodules 3-20cm Diffuse margins Deep seated in fat Bilateral but NOT symmetrical
181
Dx and resolution time for erythema nodosum
Elevated ESR and CRP, leukocytosis Spontaneous resolution in 6 weeks 2 punch biopsies to get dermis, then adipose fat - must get the fat!!!
182
Tx for erythema nodosum
Bed rest Compressive bandages Wet dressings
183
Pharm tx for erytema nodosum
NSAIDs and Prednisone
184
Psoriasis
T cell mediated Poorly understood
185
2 Onset peaks of psoriasis
20-30 50-60
186
Development of psoriatic lesions stage 1
Psoriatic without active lesion Slight capillary dilation and curvature Slight increase in dermal mononuclear cells and mast cells Increase in epidermal thickness
187
Second phase of psoriatic lesion
A developing lesion Progressive capillary dilation and toruosity Increase in mast cells, t cells, and degranulation of mast cells Increasing epidermal thickness
188
Fully developed posriatic membrane
10 fold increase in blood flow and epidermis Increase in T cells Neutrophils in stratum corneum
189
Risk factors for psoriasis
Trauma d/t friction causes tetanerization Immune and genetic
190
Eruptive/Inflammatory psoriasis
Guttate or nummular psoriasis Multiple small lesions with spontaneous remission Follows strep pharyngitis
191
Pustular psoriasis
Pustules instead of patches, papules and plaques Corticosteroid withdrawal Stinging, burning, pruritis
192
Plaque psoriasis (chronic stable)
MC presentation Classic lesions for months to years with little change Dull red plaques, well demarcated
193
Classic psoriatic lesion
Papule/Patch/Plaque Silvery white scales that leave small blood droplets when scratched - Auspitz sign (easy removal) Pruritis
194
General presentation of psoriasis
Salmon/Pink papules 2-10 mm Concentrated on trunk with scalp and extremity lesions Resolves spontaneously or becomes chronic
195
Common sites of psoriasis
Elbows Knees Scalp Gluteal cleft - MC Palms/Soles
196
Palm/Sole psoriasis
Thick, adherent silvery white or yellow scaling Painful cracking and fissures
197
Scalp psoriasis
Sharply marginated Intense pruritis NO hair loss
198
Intriginous psoriasis
Usually more macerated and moist
199
Nail psoriasis
Pitting, onycholysis Yellow/Brown oil spots
200
Palmo-plantar pustular psoriasis
2-5mm pustules Erupt into dusky red erosions/crusts Persists for years
201
Generalized "von Sumbusch" pustular psoriasis
Pustules coalesce into lakes Nikolsky sign LIFE THREATENING May evolve to plaque psoriasis
202
Psoriatic arthritis
Joint stiffness and pain with swelling, redness and tenderness
203
Dx for psoriasis
Usually clinical -biopsy, strep test for acute inflammatory, KOH for fungal suspicion Culture for pustular
204
Treatment of psoriasis
Generalized - refer to derm Psoriatic arthritis - to rheumatology
205
Management for localized psoriasis
Apply high potency topical steroids after soaking lesions Calcipotriol Vitamin D analog Occlusive dressing
206
Retinoids for localized psoriasis
Tazarotene with GC and UV therapy Coal tar with salicylic acid Emollients
207
MOA of vitamin D analogs
Dovonex, Calcitrene (brand names) Binds to Vitamin D receptor and regulates cell growth
208
Vitamin D analog use
Psoriasis Apply thin layer BID May cause burning, itching, photosensitivity
209
Calcitriol ointment
Also for psoriasis Binds to vitamin D receptor and regulates growth
210
Management of scalp psoriasis
Tar shampoo followed by medium-high potency lotion
211
Management of palm/sole psoriasis
High potency topical steroid ointment with occlusive dressing PUVA soaks Oral retinoids
212
Management of body fold psoriasis/intertriginous
Short term steroids (2-4 weeks) followed by: Vitamin D analog OR Topical retinoid (tazarotine) OR topical calcineurin inhibitor (tachrolimus/pimecrolimus)
213
Management of nail psoriasis
Long time to heal PUVA Oral retinoids Biologics for complicated
214
Psoriasis drug that is categor X for pregnancy
Tazarotine - retinoid
215
Coal tar side effect that is unique
Stinks - odor
216
Inflammatory psoriasis management
Refer to derm UVB or Oral PUVA photochemotherapu
217
Management for generalized pustular psoriasis
Hospitalization with IV fluids In hospital derm consult IV abx
218
Management for generized plaque psoriasis
PUVA UVB Oral retinoid Biologics
219
Most improtant piece of information for cutaneous drug rxn hx
Timing!!
220
Immediate drug reaction
Within an hour of first dose
221
Delayed drug reactions
After an hour, usually within 6 hours but can be weeks to months
222
Exanthemous drug reaction rash
Maculopapular rash PCN administration in EBV and CMV 2-3 days immediate Delayed 7-10 days
223
High probability for exanthemous drug reaction drugs
PCN, Carbamazepine, Allopurinol, Gold salts
224
Medium probability for exanthemous reaction drugs
Sulfonamides, NSAIDs, Isoniazid, erythromycin, streptomycin
225
Low probability for exanthemous drug reaction drugs
Barbituates, BZDs, Phenothiazines, tetracyclines
226
Management of exanthemous drug reactions
D/c drug usually - if we want to keep the drug treat with oral or topical steroids
227
Fixed drug eruption
Patch or plaque at the same site upon exposure Onset 30 min-8 hours
228
Presentation of fixed drug eruptions
Shaply marginated, dusky red later, erythematous early Glans penis is common site
229
Management of fixed drug eruptions
Remove offending agent Topical steroid for non-eroded lesion Abx for eroded lesion Antihistamine for pruritis
230
Drug induced hypersensitivity syndrome drugs that cause it
Sulfonamides Dapsone Sulfasalazine Phenytoin Carbamazepine Phenobarbital
231
Adverse cutaneous drug reaction presentation
2-6 weeks after drug initiation or after increase in dose Fever, facial edema Lymphadenopathy and Hepatosplenomegaly
232
Lesions of adverse cutaneous drug reaction
Maculopapular eruption starting on face Oropharyngeal lesions
233
Dx for adverse cutaneous drug eruption
Need three of: Cutaneous drug eruption Hematologic abnormalities Systemic involvement (Lymphadenopathy >2cm; elevated LFT, Elevated BUN/Cr)
234
Tx for drug induced hypersensativity syndrome
Stop all suspected medications Topical steroid with mild/mod Oral steroids if mod/severe
235
Pustular drug eruption
Acute febrile eruption Sterile pustules with erythematous base Resolve over 2 weeks Desquamate over 2 weeks
236
Seborrheic keratosis
Common benign neoplasms appearing on the chest and back Stuck on appearing with well defined borders Unknown etiology
237
Appearance of SK
Stuck on, greasy, itchy Yellow to black/brown Well demarcated Waxy scale
238
Lichenoid keratosis
Inlfamed seborrheic keratosis - pink siny plaque Can be a sign of internal cancer
239
Dermoscopy of seb ker
Ridges, fissures forming a cerebreform (brain like) pattern Looped or hairpin vessels Scaloped border
240
Dx for Seb ker
Made clinically Dermoscopy to differentiate between melanoma Biopsy if concerned for cancer
241
Histopathology suggestive of seb Ker
Sharply demarcated proliferation of monotonous epidermal keratinocytes Small keratin cysts "horn cysts"
242
Tx for Seb ker
Removed for cosmetic purposes Reassure on chronic nature Dermoscopy if suspicious
243
Therapy for seb ker
Cryosurgery Shave excision for large
244
Melasma
Dark pigmentation usually on the face/maxilla May be seen in pregnancy Woods lamp can dx but not necessary
245
Tx for melasma
Triluma which is Flucinolone, Hydroquinone, and Tretinoin
246
Solar lentigo
Localized proliferation of melanocytes in caucasian patients Brown oval with ill defined borders Sun exposed areas
247
Tx for solar lentigo
Cryotherapy of Laser tx
248
Acrochordon
Skin tags May become tender, orhemorrhagic May be seen in metabolic syndrome
249
Epidermal inclusion cysts
Often a plugged pilosebaceous gland Symptomatic until infected
249
Tx for acrochordon
Cryotherapy Snipping Electrodessication
250
Presentation of epidermal inclusion cyst
Flesh colored firm nodules Malodorous contents Face, Trunk, Neck Scrotum
251
Pt. Ed for EIC
Don't pick at or squeeze
252
Dx for EIC
Clinical, make refer to bx or FNA
253
Tx for EIC
No tx if asymptomatic I&D if inflamed I&D and abx if infected Excision - best performed when not inflamed
254
Prognosis of epidermal cysts
May wax and wane - watch for non-healing but not common
255
Lipoma
MC soft tissue tumor Collection of fat cells in a fibrous capsule MC on trunk
256
Lipoma presentation
Soft, painless, slow growing nodule 1-10cm in size Rubbery
257
Lipoma dx
Clinical Bx IF: Pain, movement restriction, rapid growth May surgically excise if problematic
258
Venous lake
Dark blue violaceous papule due to a dilated venule MC on face, lips, ears MC over 50 Lined with endothelial cells
259
Dx characteristics of a venous lake
Compresses with pressure Lightened with diascopy Vascular on dermoscopy
260
Tx for venous lake
Resect for cosmetic reasons - laser excision
261
Urticaria
Pruritic, raised well-circumscribed areas of erythema and edema WBCs cause extravasation of fluid to dermis
262
Presentation of urticaria
Raised erythematous-pink-skin colored wheals with central pallor Size and shape change rapidly Resolves in 24 hours May be able to draw on skin
263
Management of urticaria
Can progress to angioedema or anaphylactic shock H1+H2+Steroid is recommended
264
H! antihistamines (3)
Loratadine, Fexofenadine, Cetirizine 1st gen but second line: Benadryl and Vistaryl
265
H2 antihistamines (3)
Cimetidine, Famotidine, Rantidine
266
Management of chronic urticaria
Antihistamines PRN
267
Pyogenic granuloma
Rapidly growing vascular lesions following a trauma Red and friable, smooth, may have crusts and erosions
268
Tx for Pyogenic granuloma
Surgical excision Electrodissection and Currettage
269
Hemangioma
Cherry, Capillary, Or Strawberry Vascular tumors in babies starting at 2-4 weeks of age MC tumor in babies
270
Presentation of hemangioma
Red, Soft, compressible papules or nodules 1-10cm
271
Simple hemangioma
Resolve by 5-10 years old
272
Deep hemangioma
aka Cavernous Lower dermis or SQ fat Purple/Bluish with telagiectasias
273
Multiple hemangiomas
Under 2mm papules over the entire body
274
Congenital hemangiomas
Present at birth
275
Management of hemangioma
Check Doppler US for blood flow - may obstruct airway, etc. Propranolol 1 st line - can be topical Prednisone 2-3mg/kg daily Laser an option
276
Vitiligo
Depigmentation disorder causing absence of melanocytes Often genetic
277
Clinical manifestation of vitiligo
Chalk or white macules with sharp margins Sun exposed areas New macules in areas of recent trauma
278
Generalized vitiligo
Symmetrical and widespread Skin around mouth, fingers, toes, nipples genitalia
279
Segmental vitiligo
Only on one part or side of the body in aband Seen at a young age progresses over 1-2 years
280
Localized vitiligo
Only 1-3 macules in a single site
281
Vitiligo universalis
Over almost the entire body d/t confluence of macules
282
Dx of vitiligo
Clinical May do a bx or woods lamp exam
283
Management for vitiligo
No cure - oral JAK inhibitors may helpSunburn precautions May use glucocorticoids or phototherapy - UV
284
Glucocorticoid use in treating vitiligo
D/c if no response in two months
285
Other tx for vitiligo
Minigrafting Depigmentation using hydroquinone
286
Desmosome
Structures that adhere cells to one another
287
Desmogleins
Proteins inside of the desmosomes
288
What holds the epidermis together
Hemidesmosomes bind epidermal basement membrane to basal membrane
289
Pemphigus
Loss of cell to cell adhesion d/t autoimmune disorder IgG antibodies bind to desmogleins
290
Pemphigus vulgaris
Flacid blisters on skin and erosions on mucous membranes Starts in oral mucosa Jewish/Mediterranean descent
291
Pemphigus Foliaceus
Scaly and crusty lesions at 40-60 years MC in Brazil
292
Skin lesions of pemphigus
Depend on when presenting - Vesicles/Bullae, Flacid and leaking May bleed, may be scattered May see erosions
293
Nikolsky sign
Dislodging of normal appearing epidermis by lateral finger pressure inlesion vicinity is positive
294
5 MC areas for pemphigus
Scalp Face Chest Axilla Groin
295
Dx for pemphegus
Biopsy at edge of blister Direct immunofluorescence on normal appearing lesion-adjacent skin Serology for ab to desmoglein
296
Management for pemphegus
Leads to death if not treated Prednisone 2-3 mg/kg until cessation, then taper May use immune suppressors Azathioprine or mycophenolate Wound care
297
Pemphigus complications
Fluid/Electrolyte imbalance Secondary infection Osteoporosis from steroid tx
298
Bullous pemphigoid
Rare autoimmune disease usually in the elderly 60-80 MC bullous autoimmune disease
299
Pathogenesis of bullous pemphigoid - 4 steps
Development of auto-antibodies against basement membrane antigens BPAG1&2 Ab's activate complement system Weakening of adhesions between dermis and epidermis Formation of bullae
300
Presentation of bullous pempigoid
Starts as pruritis/Urticaria Large tense firm topped bullae NEGATIVE Nikolsky sign Less severe/painful oral lesions
301
Dx for bullous pemphigoid
Biopsy is Gold Standard - linear IgG deposits along basement membrane Serology also possible
302
Tx for bullous pemphigoid
Derm referral Prednisone 50-100mg/day divided may couple with azathioprine
303
Erythema Multiforme
Acute hypersensitivity reaction affecting the skin and mucous membranes May have eye involvement Infection or Drug related
304
MCC of erythema multiformes
HSV
305
Presentation of erythema multiforme
Erythematous papular or urticarial type lesions Can have mucosal ulcerations and uveitis Bilateral and symmetric - Usually
306
EM minor - 4 characteristics
Little or no mucosal involvement Vesicles but nobullae No systemic symptoms Confined to face and extremities
307
EM major - 6 characteristics
Mucosal involvement Confluence of lesions + Nikolsky sign Constitutional symptoms Chelitis/Stomatitis Eye involvement
308
MC etiology of EM major
Drug reaction
309
Management of erythema multiforme
Antihistamine for pruritis Low dose topical steroid Antiviral for underlying HSV High dose steroid gel or lido/benadryl topical oral solution
310
Systemic tx for erythema multiform
IV fluids Hospital admit Systemic steroids for severe disease Compresses of large lesions
311
Steven Johnson Syndrome
Cytotoxic event caused by immune response resulting in keratinocyte destruction MC d/t rx drugs
312
Findings of SJS/TEN
Fever chills, Skin tenderness Abrupt mucocutaneous lesions: Macule, Papule, Vesicle/Bulla, Erosion Rapid confluence + Nikolsky sign Red oozing dermis Dermis off in sheets
313
Distribution of SJS/TEN
Face and extremities
314
SJS/TEN ocular
Conjunctivitis, Keratitis, etc.
315
SJS/TEN emergency
Fever HR over 120 Sloughing of epidermis
316
Dx for SJS/TEN
Clinical, biopsy may aid - extent determines SJS vs. TEN
317
SJS criteria
Under 10% of body surface
318
TEN criteria
Over 30% of body surface
319
Criteria that could be either SJS or TEN
10-30% of body surface affected
320
Management of SJS/TEN
Stop insult IV fluids Parenteral nutrition IV pain meds Would care
321
Acanthosis nigricans
Darkening of neck, elbows, etc. - body folds May have skin tags
322
8 types of acanthosis nigricans
Obesity Cancer - worry if thin pt. Drug - Niacin Syndromic - Acromegaly or Autoimmune Acral - From leaning on knees, elbows Unilateral - Nevoid Beinign - Auto dom Mixed
323
What to look for in acanthosis nigricans
Make sure it isn't just dirt - use alcohol pad Usually symmetric Velvety thickening
324
Dermatosis tera firma
Patient is dirty
325
Tests for acanthosis nigricans
Usually clinical, esp. if hx of diabetes, obestity, PCOS Biopsy if concern for malignancy etc.
326
Management of acanthosis nigricans
Evaluate with other providers for underlying causes - endo, etc.
327
Pharm for acanthosis nigricans
Retinoid and Vitamin D can be used
328
Common locations for pressure injuries
Ischial tuberosity, trochanter, sacrum, maleolar, heel
329
Pressure injury PE
May be deeper than appears - wider at base May need pain meds for full exam
330
Stage 1 pressure ulcer
Skin intact with non-blanchable erythema
331
Stage 2 pressure ulcer
Partial loss of dermis Shallow, open ulcer
332
Stage 3 pressure ulcer
Full thickness skin loss with fat exposed
333
Stage 4 pressure ulcer
Exposed bone, muscle or tendon
334
Unstageable pressure ulcer
Covered with slough or eschar Suspected deep injury if purple
335
Foul odor pressure ulcer
May indicate an anaerobic infection
336
Management for pressure ulder stage 1
Eliminate risk factors - redistribute pressure Cover with transparent film for protection
337
Management for Stage II pressure ulcer
Transparent or hydrocolloid dressing - CI in active infection
338
Management for stage III-IV pressure ulcer
Debridement
339
Monitoring for pressure ulcer
Measure size in cm Exudate Tissue type Score 0-17 (lower is better)
340
Prognosis for pressure ulcer healing
I-II in 1-2 weeks III-IV in 6-12 weeks
341
MC pressure ulcer complication
INfection
342
Hidradenitis supperativa
Chronic supperative disease of the apocrine gland bearing skin areas (axillae, crural, etc.) Females more common Larger BMI or smokers, occlusive dress
343
Pathophys of hidrenitis suppurativa
Infiltration, dialtion, and rupture of follicles - become connected leading to tx difficulty
344
Presentation of HS
Recurrent painful supurrative lesions that leave scars Open comedomes Abcess, scarring, and sinus tracts
345
Management of HS
Goal to reduce length, symptoms, scarring, and tunnelling Combo of steroids, abx, retinoin, biologics, surgery used to be more popular
346
Acute lesion tx for HS
I&D or "de-roof lesions
347
Abx for HS
PCN, Cephalosporins, Augmentin, Clinda
348
Tx for recurrent HS
Abx with retinoid (ie. Clinda and Isotretinoin) Excision may be needed Humira
349
Lifestyle modifications for HS
Hygeine Weight loss Warm compress Smoking cessation Tea bags applied to lesions Looser undergarments Laser hair removal/Shaving change
350
Photosensitivity
Abnormal response to light - sunburn, rash or urticaria
351
Presentation of acute sunburn
Pruritis, pain, or tenderness May have toxic or flu like illness if severe Bright red
352
Sunburn development
Develops after 6 hours, peaks at 24
353
Management of sunburn
Cool wet dressings Aloe vera NSAIDs for systemic Fluids and rest are improtant for severe cases
354
Peak sun exposure hours - avoid sun
10AM to 2PM
355
Sunscreen minimun requirement
At least 30spf applied every 80 minutes
356
Drug or Chemical photosensitivity
Due to a chemical or allergen causing a photo-reaction - may be due to retinoids, amiodarone, etc. Allergy is more eczematous
357
Tx for phototoxicity
Non-delayed Treat like sunburn
358
Tx for photoallergy
Delayed reaction Remove offending agent and steroid, antihistamine tx
359
Xerosis
Dry skin Ashiness, fine scale and fissuring Pruritic and patchy, less shine
360
Risk factors for Xerosis
Age - common over 60 Longer bathing Moisturizing use
361
Tx for Xerosis
Use moisturizer - low fragrences - Dove, cetaphil, cerave Bathing in tepid water - not too often Mist skin before applying moisturizers Humidifier
362
Topical agents for Xerosis
Lactic acid, ammonium lactate, alpha hydroxy acids
363
Icthyosis
Autosomal dominant tough scale - like fish Associated with atpoic derm Extreme dryness
364
When is icthyosis more common
Winter
365
Presenting time of life for icthyosis
3-12 months of age
366
Acquired icthyosis
Rare - may indicate malignancy
367
Presentation of icthyosis
Dry, fine scaling skin, most obsvious in extensor extremities Symptoms better in summer
368
Dx for icthyosis
Clinical - may do a biopsy but not necessary
369
Management of ichthyosis
Emollients are mainstay Humidifier Moisturizing soaps after bathing Keratolytics
370
Mohs surgery for cancer rule of thumb
Always for on the face Depends on size elsewhere