Dermatology COPY Flashcards
1
Q
Define Macule
A
Non palpable
Well circumscribed change in skin color
Less than 1 cm
2
Q
What is the primary morphology of this lesion?
A
Macule
(labial melanotic macule)
3
Q
Define Patch
A
nonpalpable
well circumscribed change in skin color
Larger than 1 cm
4
Q
What is the primary morphology of this lesion?
A
Patch
(Speckled Nevus)
5
Q
Define Plaque
A
Palpable
Elevated
Solid skin lesion
Greater than 1 cm
6
Q
Define Papule
A
Palpable
Elevated
Solid skin lesion
Less than 1 cm
7
Q
What is the primary morphology of this lesion?
A
Papule
(Spitz nevus)
8
Q
What is the primary morphology of this lesion?
A
Plaque
(Psoriatic plaque)
9
Q
Define Wheal
A
Transient
Smooth papule or plaque
Seen in urticaria
10
Q
What is the primary morphology of this lesion?
A
Wheal
(Urticaria)
11
Q
Define Vesicle
A
Small
Fluid containing blister
Less than 1 cm
12
Q
What is the primary morphology of this lesion?
A
Vesicles
(Herpes Zoster)
13
Q
Define Bulla
A
Large
Fluid containing blister
Greater than 1 cm
14
Q
Define Pustule
A
Vesicle containing pus
15
Q
Define Nodule
A
Solid
Non-superficial skin mass
1-2 cm
16
Q
Define Tumor
A
Solid skin mass
Greater than 2 cm
17
Q
What is the primary morphology of this lesion?
A
Bulla
(Bullous Pemphigoid)
18
Q
What is the primary morphology of this lesion?
A
Pustules
(Pustular psoriasis)
19
Q
What is the primary morphology of this lesion?
A
Nodule
(Large pigmented dermatofibroma)
20
Q
What is the primary morphology of this lesion?
A
Tumor
(Melanoma)
21
Q
Define Scale
A
Flaking off of the stratum corneum
22
Q
Define Crust
A
Dried exudate
23
Q
Define Excoriation
A
Linear skin damage
Due to scratching or scraping
24
Q
Define Lichenification
A
Skin thickening
Prominent skin lines
Due to repeated rubbing or scratching
25
Define Erosions
Loss of areas of the epidermis
Due to:
- Manipulatin of the skin
- Popping blistered areas
26
Define Ulcers
Deep areas of skin loss
Extends at least into the deeper dermis
27
Define Fissures
Cracking of the skin
Somewhat linear pattern
28
Define Atrophy
Thinning of the skin
29
Define Hypertrophy
Thickening of the skin
30
What is the secondary morphology of this lesion?
Scale
(Scalp psoriasis)
31
What is the secondary morphology of this lesion?
Crust
(Superficial infected atopic dermatitis)
32
What is the secondary morphology of this lesion?
Excoriations
(Scratching due to psoriasis)
33
What is the secondary morphology of this lesion?
Lichenification
(Lichen simplex chronicus)
34
What is the secondary morphology of this lesion?
Erosions
(Bullous pemphigoid after blisters have broken)
35
What is the secondary morphology of this lesion?
Ulcer
(Venous stasis ulcer)
36
What is the secondary morphology of this lesion?
Fissures
(Hand dermatitis)
37
What is the secondary morphology of this lesion?
Atrophy
(Discoid lupus)
38
What is the secondary morphology of this lesion?
Hypertrophy
(Hypertrophic lichen planus)
39
Define Erythematous
Pink to red
Increase in blood flow to the area
40
Define hypopigmented
Decrease in pigmentation from the surrounding area
41
Define Depigmented
Complete lack of pigmentation
42
Define Hyperpigmented
Increase in pigmentation from the surrounding skin
43
What is color/pigmentation of this lesion?
Erythematous
(Erythrodermic psoriasis)
44
What is color/pigmentation of this lesion?
Hypopigmented
(Postinflammatory hypopigmentation with treatment of psoriasis)
45
What is color/pigmentation of this lesion?
Depigmented
(Vitiligo)
46
What is color/pigmentation of this lesion?
Hyperpigmented
(Postinflammatory hyperpigmentation and Acanthosis nigricans)
47
Define Ecchymosis
Bruising from bleeding under the skin
48
Define Petechiae
Pinpoint bleeding in the skin
49
Define Purpura
Larger areas of bleeding or vascular inflammation
50
Define Telangiectasis
Small dilated vessels
51
Define Nummular
Coin shaped
52
Define Serpiginous
Snakelike 🐍
53
Define Annular
Bordered by a raised ring
54
Define Reticular
Netlike
55
Define Umbilicated
Like an umbilicus
56
Describe the distribution of Acral
Hands and Feet
57
Describe the distribution of Intertriginous
In areas of skin folds
58
Describe the distribution of Photo-distributed
In areas prone to sun exposure
59
Define Verrucous
Wartlike with a rough surface
60
What vascular term would be used to describe this lesion?
Petechiae
| (Thrombocytopenia)
61
What vascular term would be used to describe this lesion?
Purpura
(Palpable Purpura in Henoch-Schonlein purpura)
62
What vascular term would be used to describe this lesion?
Telangiectasias
| (Rosacea)
63
Describe the surface characteristics of this lesion
Verrucous
| (Wart)
64
Describe the surface characteristics of this lesion
Pearly and smooth
| (Basal Cell Carcinoma)
65
Describe the shape of this lesion
Nummular
| (Nummular Dermatitis)
66
Describe the shape of this lesion
Serpiginous
| (Cutaneous larva migrans)
67
Describe the shape of this lesion
Annular
| (Granuloma annulare)
68
Describe the shape of this lesion
Reticular
| (Livedo Reticularis)
69
Describe the shape of this lesion
Umbilicated
| (Molluscum)
70
How would you describe the location of this condition?
Intertriginous
| (Inverse psoriasis)
71
Differential diagnosis for skin lesion with plaques and scales?
Psoriasis
Chronic cutaneous discoid lupus
Tinea Corporis
Paget’s Disease
Lichen Planus
Bowen’s Disease
Cutaneous T-cell lymphoma (mycosis fungoides)
Pityriasis rosea
Secondary Syphilis
Ichthyosis
72
Describe Psoriasis
Oval, erythematous plaques
Extensor surfaces or sites of trauma
Pitting fingernails
Associated with asymmetric polyarthritis
73
What is the treatment of psoriasis if \<5% of the body is involved?
Topical:
corticosteroids
Calcipotriene (Vit D3 analog)
Retinoids (tazarotene)
Systemic:
Calcineurin Inhibitors- Tacrolimus
Cyclosporine
74
What is the treatment of psoriasis if \>5% of the body is involved?
Vitamin D analogs +/- phototherapy
Sysemtic/Biologic agents
75
What is the treatment for severe, recalcitrant disabling psoriasis?
Phototherapy, UVB
Systemic Agents:
Methotrexate
Acitretin
Cyclosporine
Apremilast
Anti-TNF agents
(Ex: Infliximab)
76
What is the differential for Bullous Lesions?
Herpes Simplex
Herpes Zoster
Impetigo
Dermatitis Herpetiformis
Burns
Bullous pemphigoid
Pemphigus Vulgaris
Eyrthema Multiforme
Porphyria Cutanea Tarda
Fixed drug eruption
77
Describe Herpes Zoster lesions
Vesicles of varying size on erythematous base
Typically in a single dermatome
Successive crops over 7 days followed by crusting for 2-3 weeks
78
How does Herpex zoster present?
Pre-eruptive pain, burning, itching (usually in one dermatome)
Fever, headache, malaise
Postherpetic neuralgia (pain after lesions clear up)
79
What is the treatment of Herpes Zoster?
Analgesics
Antiviral therapy- Acyclovir, Famciclovir, or Valacyclovir for 7 days
80
What is the role of corticosteroids in Herpes Zoster treatment?
May decrease pain in acute phase
No reduction in risk of postherpetic neuralgia
May increase risk of secondary infection
81
What is the treatment for postherpetic neuralgia?
Pregabalin or Gabapentin
TCAs
Opioids
Sympathetic nerve block - Bupivacaine
82
When is Shingrix (HZV) vaccine given?
50 years and older
Regardless of hx of varicella or other zoster vaccines
2 doses - 2 to 6 months apart
90% effective
83
Which vaccine is prefered for HZV?
Shingrix
Higher effectivity than Zostavax
84
What is the differential for pruritic erythematous papules?
Miliaria Rubra
Atopic dermatitis
Urticaria
Insect bites
Scabies
Pruritic papular Eruption
Pruritic urticarial papules and plaques of pregnancy (PUPPP)
85
What skin condition is commonly on flexor surfaces v. extensor surfaces?
Flexor- Atopic dermatitis
Extensor- Psoriasis
86
Describe scabies lesions
Curved or linear burrows
Vesicles or papules
Pustules indicated secondary infection
87
What is scabies?
Hypersensitivity reaction to Sarcoptes scabiei
May present with nocturnal pruritus
88
Where are scabies lesions commonly seen?
Axilla
Breasts
Elbows, wrists
Finger Webs
Waist
Buttocks, Genitals
89
How is scabies diagnosed?
Mark burrow with felt tip pen
Examine scraping under microscope with KOH or mineral oil
Mites will appear black
May also see eggs and feces
90
What is Norwegian Crusted Scabies?
Overwhelming infestation
Crusted lesions
Not as pruritic as regular scabies
Typically seen in immunocompromised patients
91
What is the treatment for scabies?
Wash all clothes and bedding used in past 48 hours in hot water or seal in plastic for 3 days
Treat all members of household and close contacts
5% Permethrin cream
Ivermectin
92
What is the best medical treatment for Norwegian Scabies?
Ivermectin 200 mcg/kg PO
Repeat in 1-2 weeks
93
What is Rhus Dermatitis?
Contact with urushiol
- Poison Ivy, Poison Oak
- Poison sumac
- Cashew, Mango
- Ginkgo, Japanese lacquer tree
94
Describe Rhus Dermatitis lesions
Linear
Vesicles, erythema
May appear 8 hours to 1 week after exposure
95
What is the treatment for Rhus Dermatitis?
Decontaminate within 10-15 minutes of exposure
Wet compress, calamine lotion
High potency topical steroids
Systemic steroids
96
Describe Folliculitis v. Furuncle v. Carbuncle
Folliculitis- superficial bacterial infection of hair follicles, purulent material in epidermis
Furuncle- deep infection of hair follicle, purulent material through dermis and subcutaneous tissue
Carbuncle- coalescence of several furuncles into single mass, purulent drainage from multiple follicles
97
What is sycosis barbae?
Folliculitis in the beard area
98
What organisms can cause foliculitis?
Staph Aureus
Pseudomonas (Hot tubs)
Candida
Non TB mycobacteria
99
What is the treatment for folliculitis?
May resolve spontaneously with or without drainage
Warm compresses TID
Avoid shaving
Antibiotics if not resolving in 2-3 weeks
100
What is the treatment for hot tub folliculitis?
Most cases self-limited
Avoid exposure to contaminated water source
Acetic acid compresses 2-4 times per day
If severe, use ciprofloxacin
101
Antibiotic treatment for folliculitis?
Usually self resolves, but if lasting 2-3 weeks or extensive involvement:
Mild Staph: Topical mupirocin
Not MRSA: cephalexin, dicloxacillin
MRSA: Bactrim, clindamycin, doxycycline
Fungal: Topical azoles
102
What is Impetigo?
Contagious superficial bacterial infection
Common in kids 2-5 years old
103
What is primary v. secondary Impetigo?
Primary- direct invasion of normal skin
Secondary- Infection at sites with previous minor trauma (ex: abrasions, eczema)
104
Describe the lesions of nonbullous impetigo
Most common
Papules surrounded by erythema that progress to pustules
Pustules form thick crusts (golden)
105
What organism is the most common cause of Impetigo?
Staph Aureus
(Beta hemolytic strep causes a minority of cases)
106
Describe the lesions of Bullous Impetigo
Vesicles enlarge and form flaccid bullae (clear yellow fluid)
Then become dark and turbid
Ruptured bullae leave brown crust
107
What is a rare complication of streptococcal Impetigo?
Poststreptococcal glomerulonephritis
108
What is the treatment of Impetigo?
Topical- Mupirocin, Retapmulin
PO- Dicloxacillin, cephalexin, clindamycin
-MRSA of PCN allergic- Clindamycin, Bactrim, Linezolid
109
What is the pathogenesis of Acne Vulgaris?
Androgen-mediated disorder of pilosebaceous units
- Androgens stimulate sebum production and keratinocyte proliferation
- Keratin plugs obstruct follicle os
- Cutibacterium acnes (P. acnes) proliferates and produces inflammation
110
What is the name of whiteheads v. blackheads?
Whiteheads- closed comedones
Blackheads- open comedones
111
Why are the face, chest, back and arms the most common areas for acne vulgaris?
Areas with highest concentration of sebaceous glands
112
What is the treatment for comedonal acne?
Topical retinoids
If uneffective add benzoyl peroxide
Maintenance therapy: Topical retinoid
113
What is the treatment for mild inflammatory acne with papules and pustules?
Topical retinoid plus benzoyl peroxide
If uneffective, add topical or oral antibiotic
Maintenance therapy: Topical retinoid
114
What is the treatment for moderate inflammatory acne with papules and pustules?
Topical retinoid and benzoyl peroxide and topical antibiotic
If uneffective, add PO antibiotic
Maintenance therapy: Topical retinoid and benzoyl peroxide
115
What is the treatment for moderate inflammatory acne with nodules?
Topical retinoid and benzoyl peroxide plus PO antibiotics
If uneffective, add oral isotretinoin
Maintenance therapy: Topical retinoid and benzoyl peroxide
116
What is the treatment for severe inflammatory acne with papules and pustules and nodules?
Oral isotretinoin
Maintenance therapy: Topical retinoid and benzoyl peroxide and topical or PO antibiotic
117
Name some nonantibiotic topical treatments for acne vulgaris
Azelaic acid
Benzoyl peroxide
Dapsone
118
Name some topical antibiotics used to treat acne vulgaris
Clindamycin
Erythromycin
119
Name some topical retinoids use to treat acne vulgaris
Adapalene
Tazarotene
Tretinoin
120
Name some systemic antibiotics use to treat acne vulgaris
Doxycycline
Erythromycin
Minocycline
Tetracycline
Bactrim
121
Can topical antibiotics be used as monotherapy for acne vulgaris?
No
Always use with benzoyl peroixde to prevent antibiotic resistance
122
What is the maximum length of PO antibiotic therapy for treating acne vulgaris?
12 weeks
Can stop if inflammatory lesions resolve or switch to topical without taper
Do not use topical or PO antibiotics together
123
What are two medications to consider for females with acne vulgaris?
Oral contraceptives
Spironolactone
124
What are the side effects of Isotretinoin?
Dry, red peeling skin
Chelitis (Chapped lips)
Hyperlipidemia
Increased intracranial pressure
Teratogen (iPledge program)
125
Name some alternative treatment options for acne vulgaris
UVA/UVB
Comedone extraction
Steroid injection into large cysts
Topical tea tree oil
126
Describe Rosacea
Erythema, transient symmetric flushing
Papules, pustules
Telangiectasia
Forehead, cheeks, nose, ocular area
127
What is the prevalence of rosacea and who is most commonly affected?
\>15 million in US
"Curse of the Celts" (Irish descent)
Women \> Men
More common after 30
128
What is the treatment for Rosacea?
Topical antibiotics- metonidazole, erythromycin
- Azelaic acid or benzoyl peroxide
- PO antibiotics
- Isotretinoin if severe or resistant
- Brimonidine (alpha 2 agonist) for erythema
- Carvedilol PO
129
Who is most likley to get seborrheic dermatitis?
Infants 2 weeks - 12 months
Adolescents and adults
Increased incidence in patient with HIV or Parkinsons
130
What is the treatment of seborrheic dermatitis?
Low potency topical steroids
Topical antifungals and/or shampoos
131
What is the treatment for perioral dermatitis?
Topical pimecrolimus or metronidazole
PO Doxycyline, tetracycline or Minocycline
132
Describe the most common rash seen in Lupus Erythematosus?
Erythema over the cheeks and nose
Spares nasolabial folds
Worse with sun exposure
(Butterfly rash)
133
What is the treatment of Discoid Lupus Erythematous?
Photoprotection, avoid aggravating drugs, smoking cessation
Topical steroids
Topical calcineurin inhibitors
PO Antimalarials
134
Differential for acquired hypopigmented lesions
Pityriasis alba
Vitiligo
Tinea Versicolor
Postinflammatory Hypopigmentation
Leprosy
Halo Nevus
Phytophotodermatitis
135
What causes Tinea Versicolor?
Pityrosporum (Malassezia) species
Worse with heat, humidity, pregnancy, steroids, immunosupression
136
Describe tinea versicolor lesions
Circular macules
Tan, dark brown or hypopigmented
Powdery scale
Upper trunk, neck, abdomen
pale yellow on woods lamp
137
What is the treatment for tinea versicolor?
Topical antifungals- cream, shampoo
PO for extensive or resistant disease
138
What causes Erythrasma?
Corynebacterium minutissium
Less inflammatory than tinea
Coral pink on woods lamp
139
What is the treatment for erythrasma?
Topical clindamycin, erythromycin
Topical clotrimazole
PO clindamycin, erythromycin if severe
140
What is the treatment for tinea capitis?
PO only:
- Griseofulvin 6-12 weeks
- Terbinafine 2-4 weeks
- Itraconazole 4-6 weeks
- Fluconazole 3-6 weeks
141
What causes Alopecia areata?
142
What is seen with alopecia areata?
Exclamation point hairs (proximal end is narrower than distal end)
- on the edges of patches
- with short broken hairs
- extracted with minimal traction
143
Alopecia totalis v. universalis
Totalis- complete loss of scalp hair
Universalis- loss of all scalp and body hair
144
What is the treatment of alopecia areata?
Corticosteroids- topical, systemic, or intralesional
Topical minoxidil 5%
Topical immunotherapy
145
What is the prognosis of alopecia areata?
50% recover within a year
May persist for several years
10% do not regrow hair
146
What is the treatment of pediculosis capitis?
(Head Lice)
Pyrethroids (Permethrin)
Malathion lotion
Benzyl alcohol
Topical or oral ivermectin
Topical spinosad
147
How long do children with pediculosis capitis (lice) need to be out of school?
Once treatment has started, no need to be excluded from school
Examine and treat household members
148
What causes warts?
Infection with HPV
Type 1- plantar warts
Types 6 & 11- genital warts
149
What is the treatment of genital warts?
Patient administered (for about 16 weeks):
-Podofilox 5%, Imiquimod 5% or Sinecatechins 15%
Provider administered:
-Cyrotherapy, BCA/TCA, surgical or laser removal
150
How can you differentiate warts v. callus?
Callus have skin lines and warts have no skin lines
151
What causes molluscum contagiosum?
Double stranded DNA Pox Virus
Spread by skin to skin contact
152
Describe molluscum contagiosum lesions
Umbilicated, firm, flesh colored, dome shaped papules
Kids- anywhere except palms and soles
Adults- usually genital area
153
What is the treatment for molluscum contagiosum?
May self resolve in 6 months to 4 years
Cryotherapy, Curettage, Laser
Imiquimod, Podofilox, KOH
Topical retinoids, salicylic acid
154
Differential for nodular lesions?
Basal cell carcinoma
Squamous cell carcinoma
Keratocanthoma
Sebaceous hyperplasia
Melanoma
Neurofibroma
Hemangioma
Prurigo nodularis
155
What is the epidemiology of basal cell carcinoma?
Most common skin cancer
Male \> female
Mostly age 40 and older
85% on head or neck
156
What is the treatment of basal cell carcinoma?
Excisional biopsy
Cryotherapy or electrodesiccation/curettage (\<6mm)
Mohs surgery- large, recurrent, nose/eyelid, sclerosing
Radiation or chemotherapy if advanced
157
What is the epidemiology of actinic keratosis?
Risk increases with age, fair skin, sun exposure
Males \> females
On sun exposed areas
158
Describe actinic keratosis lesions
Rough, scaly patches
Skin tone to red/brown
Well circumscribed
1mm to 25 mm
Often multiple present
159
What is the prognosis of actinic keratosis?
Potential to progress to squamous cell carcinoma (most do not)
\*60% of SCC arise from AKs
26% regress spontaneously
160
What is the treatment of actinic keratosis?
Cryotherapy
Curettage
Aminolevulinic acid
Topical fluorouracil, imiquimod, diclofenac or ingenol mebutate
161
Name some precursors to squamous cell carcinoma
Actinic Keratosis
Keratocanthoma
Cutaneous horn
Bowen's disease
Erythroplasia of Queyrat
162
What are some risk factors for squamous cell carcinoma?
Chronic injury or disease of the skin
Exposure to UV radiation
Immunosuppression
163
How is squamous cell carcinoma diagnosed?
Shave biopsy- if raised
Punch biopsy
164
What is the treatment for squamous cell carcinoma?
Surigical excision/Mohs surgery
Electrodesiccation/curettage if small/low risk
Radiotherapy if high risk, unable to surgically remove
165
Differential for pigmented lesions?
Intradermal nevus
Melanoma
Seborrheic keratosis
Kaposi's Sarcoma
Cherry angioma
Pigmented basal cell carcinoma
166
Epidemiology of malignant melanoma?
Non-hispanic caucasians at highest risk
Median age 57
Men \> women
167
Risk factors for malignant melanoma?
Large number of atypical nevi
Hx of other skin cancers
Hx of congenital giant nevus
Family hx of melanoma
Immunosuppression
UV radiation exposure
168
What are the ABCDEs of melanoma?
Asymmetry
Border irregularity
Color variegation
Diameter \> 6mm
Evolving
Ugly duckling sign (looks different than other nevi)
169
What feature of melanoma determines its prognosis?
Thickness
AJCC staging used
170
How is melanoma diagnosed?
Full thickness biopsy
- Excision with at least 2 mm borders
- (Very wide excision not necessary)
171
What is the treatment of seborrheic keratosis?
Cryosurgery
Curettage +/- electrodessication or shave excision
Observation
172
What is the sign of Leser-trelat?
Sudden appearance of numerous seborrheic keratoses
Sudden growth of existing SKs
Associated with malignancy (gastric adenocarcinoma)
173
What do Epidermal Cysts contain?
Keratin
174
What is the treatment for epidermal cysts?
If no infection/inflammation can resolve without treatment
Injection of triamcinolone
Excision (4-6 weeks after inflammation resolves)
I&D if infection or severe inflammation
PO abx if not responding after I&D
175
What is the treatment of Keloid?
Intralesional steroids
70% improve
50% recurrence at 5 years
\*may cause atrophy, hypopigmentation
176
What is the most likely diagnosis of this skin finding?
Plaque Psoriasis
177
What is the most likely diagnosis of this skin finding in the axilla?
Tinea corporis
(Annular pururitic lesion with concentric rings)
178
What is the most likely diagnosis of this skin finding?
Pityriasis rosea
(Arrow points to herald patch)
(Can have "Christmas tree" distribution)
179
What is the most likely diagnosis of this skin finding?
Bowen disease
(Squamous cell carcinoma in situ)
\*lesion on upper edge of photo is an actinic keratosis
180
What is the most likely diagnosis of this skin finding?
Pityriasis rosea
(Can have "Christmas tree" distribution)
181
What is the most likely diagnosis of this skin finding?
Ichthyosis vulgaris
182
What is the most likely diagnosis of this skin finding on flexor surface of the wrist?
Lichen planus
183
What is the most likely diagnosis of this skin finding?
Herpes Zoster
184
What is the most likely diagnosis of this skin finding?
Bullous pemphigoid
185
What is the most likely diagnosis of this skin finding?
Erythema multiforme
186
What is the most likely diagnosis of this skin finding on the palms?
Scabies
(Notice the burrows)
187
What is the most likely diagnosis of this skin finding?
Atopic dermatitis
188
What is the most likely diagnosis of this skin finding?
Allergic contact dermatitis from poison ivy
189
What is the most likely diagnosis of this skin finding?
Contact dermatitis
(Likely from pants button or belt)
190
What is the most likely diagnosis of this skin finding?
"Hot tub" folliculitis
(Distribution around swim suit or water line)
191
What is the most likely diagnosis of this skin finding?
Pseudofolliculitis barbae
(Shaving worsens condition)
192
What is the most likely diagnosis of this skin finding?
Impetigo
(Honey crusted plaque)
193
What is the most likely diagnosis of this skin finding?
Severe inflammatory acne
194
What is the most likely diagnosis of this skin finding?
Comedonal acne
195
What is the most likely diagnosis of this skin finding?
Inflammatory acne with pustules and nodules
196
What is the most likely diagnosis of this skin finding?
Rosacea
(Erythema and telangiectasias)
197
What is the most likely diagnosis of this skin finding?
Papulopustular rosacea
198
What is the most likely diagnosis of this skin finding?
Rhinophymatous rosacea
199
What is the most likely diagnosis of this skin finding?
Seborrheic dermatitis
200
What is the most likely diagnosis of this skin finding?
Perioral dermatitis
(tiny papules, scaling, erythema around mouth and nose
201
What is the most likely diagnosis of this skin finding?
Tinea versicolor
202
What is the most likely diagnosis of this skin finding?
Pityriasis alba
203
What is the most likely diagnosis of this skin finding?
Erythrasma
(Coral red flourescence with Wood's lamp)
204
What is the most likely diagnosis of this skin finding on scalp?
Tinea capitis
205
What is the most likely diagnosis of this skin finding?
Allopecia areata
206
What finding do these arrows indicate in alopecia areata?
Exclamation point sign
(Hair is narrow at the base, wide at the end)
207
What is the most likely diagnosis of this skin finding?
Traction alopecia
208
What is the most likely diagnosis of this skin finding?
Melasma
209
What is the most likely diagnosis of this skin finding?
Plantar Wart
(Notice that skin lines are disrupted)
210
What is the most likely diagnosis of this skin finding?
Molluscum contagiosum
211
What is the most likely diagnosis of this skin finding?
Superficial basal cell carcinoma
(Notice the pearly border and areas of pigmentation)
212
What is the most likely diagnosis of this skin finding?
Squamous cell carcinoma
213
What is the most likely diagnosis of this skin finding?
Melanoma
214
What is the most likely diagnosis of this skin finding?
Actinic keratosis
215
What is the most likely diagnosis of this skin finding?
Keratoacanthoma
(Notice telangiectasias ans central keratin core)
216
What is the most likely diagnosis of this skin finding?
Keratoacanthoma
(Central keratin core)
217
What is the most likely diagnosis of this skin finding?
Seborrheic keratosis
(Notice visible horn cysts)
218
What is the most likely diagnosis of this skin finding?
Pyogenic granuloma
219
What is the most likely diagnosis of this skin finding?
Compound dysplastic nevus
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