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Derm Flashcards

1
Q

Hutchinsons sign

A

malignant melanoma sign on nail
Acral lentiginous

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2
Q

SCC risk factors

A

sun
actitinic keratosis and bowens
immunosuppression (kidney transplant, HIV)
Smoking
marjolins ulcer
xeroderma pigmentosum

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3
Q

Poor prognosis SCC

A

poorly differentiated tumor
>20mm in diameter
>4mm deep
immunosupression for whatever reason

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4
Q

Acral lentiginous melanoma sx

A

dark skin
non sun exposed areas eg nails palms soles

bob marley!

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5
Q

Cherry hemangioma other name and pathophys

A

campbell de morgan spots

abnormal proliferation of capillaries

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6
Q

Cherry hemangioma sx and tx

A

mc with advancing age

erythematous papular lesions
1-3mm
non blanching
not on mucous membranes

no tx - benign

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7
Q

upper lip carcinoma

A

BCC

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8
Q

lower lip carcinoma

A

SCC

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9
Q

BCC presentation

A

waxy pearly pap –> nod
+ telangiectasis

may later form central crater w rolled edges

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10
Q

SCC presentation and association

A

erythematous, thickened, scaling nodule
ulceration

asscociated w actinic keratosis and bowens

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11
Q

MC mets in melanoma

A

lung mets
then brain and liver

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12
Q

koebner phenomenom

A

skin lesions over the sight of inury ie injection site happens in

psoriasis
vitiligo
warts
lichen planus
lichen sclerosis

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13
Q

auspitz sign

A

scales that bleed when picking (psoriasis)

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14
Q

Gottrons papules

A

roughened red papules over the knuckles mainly, are seen in dermatomyositis

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15
Q

scalp psoriasis 1st line tx

A

potent topical corticosteroids

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16
Q

guttate psoriasis presentation

A

acute onset tear drop scaly papules on trunk and limbs

post strep throat

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17
Q

Hairy leukoplakia

A

EBV-associated white lesion on the side of the tongue, and is considered indicative of HIV

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18
Q

Keratoderma blennorrhagica

A

waxy yellow brown papules on palms and toes

symptom of reactive arthritis

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19
Q

reactive arthritis triad

A

can see, pee or climb a tree

conjunctivitis
urethritis
arthritis

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20
Q

what is tinea corporis

A

ringworm

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21
Q

lichen planus 1st tx

A

topical betamethasone 0.1%
or clobetasol

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22
Q

what is pellegra and what is it caused by

A

naicin (vit B3) deficiency caused by isonizid and more common in alcoholics

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23
Q

3 features of pellegra

A

dermatitis
diarohoea
death

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24
Q

dermatitis of pellegra

A

brown scaly rash on sun exposed sites
casal’s necklace if around neck

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25
pemphigoid gestationis
pruritic blistering lesions peri-umbilical region, later spreading to the trunk, back, buttocks and arms oral corticosteroids
26
Discoid lupus erythematosus presentation
erythematous plaques on the face
27
behcets triad
Oral Ulcers genital ulcers anterior uveitis
28
actinic keratosis tx
topical diclofenac 5-fluorouracil imiquimod
29
verucca tx
salicylic acid
30
lice tx
malathion
31
primary herpes simplex infection presentation incubation period
malaise fever extensive painful oral ulceration with submandibular lymphadenopathy 2-20 days
32
ketoconazole adverse affect
gynecomastia
33
other name for spider naevi and what is it
spider angioma central red papule w surrounding papule
34
how to tell telangiectasia from spider naevi
by pressing on them Spider naevi fill from the centre, telangiectasia from the edge .
35
spider naevi caused by
liver disease pregnancy COCP
36
atheletes foot other name and what what bug causes it
tinea pedis dermatophytes like Trichophyton rubrum
37
What is athelets foot
a common fungal infection of the skin on the feet. The image provided likely shows macerated, scaling skin between the toes, which is characteristic
38
atheletes foot tx
Topical Miconazole
39
what is bowens disease and tx
SCC in situ affecting epidermis if left can become invasive - 5-fluoracil
40
What does bowens look like
red, scaly, crusted patch on sun-exposed areas of the body
41
how to differentiate SCC and bowens
SCC ulcerates, grows faster nd may bleed
42
Severe burn and brisk haematemesis
Curlings Ucers (gastric)
43
Scabies tx
permethrin cream pt and all close contacts two doses cream whole body one week apart
44
allergic contact dermatitis ix
patch testing
45
what is ezcema herpeticum who cops & tx
HSV 1 or 2 Young kids w atopic eczema life threat!! admit for IV acyclovir
46
erythema marginatum is?
rash associated with rheumatic fever (one of major criteria)
47
fungal infection when oral/topical treatment
scalp (tinee capitis) nail (onchomycosis) = oral terbinafine corporis (body) cruris (genital) pedis (athelets foot) = Topical
48
impetigo tx when topical hydrogen peroxide unsuitable
topical fusidic acid
49
electric high voltage burns = tx
rhabdomyolosis --> acute tubular necrosis aggressive ive fluids
50
Circumfential burn =
compartment syndrome
51
salmon patch
flat pink self resolves
52
scabies sign
linear burrows
53
livedo retularis
SLE
54
diseases that have koebner phenomenon
psoriasis vitiligo molluscum contagiosum warts lichen planus lichen sclerosis
55
what is pompholyx
ezcema on hands and on feet precipitated by humidity and sweating and high temps
56
pompholyx presentation n mx
small blisters on hands and toes super itchy sometimes burning sensation cool compress emollient topical steroids
57
arterial ulcer presentation
burning in leg over bony prominences deep, dry, punched out ulcer
58
atopic eruption of pregnancy presentation
MC dermatosis in pregnancy 2nd/3rd tri itchy erythematous papules face neck chest and extensor surfaces of the limbs benign
59
dermoid cyst and tx
embryo remnants skin hair follices sweat glands etc lined by hair and squamous epithelium often in midline dumbell shape if linked to deeper structures
60
causes of livedo reticularis
MC idipathic SLE polyarteritis nodosa antiphospholipid
61
alopecia areata presentation
well demarcated patches of hair loss broken 'exclamation mark' hairs on edge
62
used to calculate IV fluid vol post for 24hrs postburn
parkland formula
63
erythema ab igne Path presentation and cause
over exposure infrared reticulated erythematous patches hyperpigmentation talengiectasia caused by open fires n hot water bottles
64
erythema ab igne inc risk for
skin scc if cause not tx
65
non sedating anti histamine
cetrizine
66
sedating antihistamine
chlorphenamine
67
1st line urticaria
non sedating antihistamine then sedating
68
sti ulcers
painful: herpes(mc) or chancroid painless: syphillis more common than lymphogranuloma venereum
69
genital herpes cause
HSV type 2
70
cold sores
HSV type 1
71
genital herpes tx
valaciclovir 10 days
72
1st line chronic plaque psoriasis
topical betamethasone and topical calcipotriol one in morning and one in night (potent top sterioud and vit d analogue)
73
most commonly affected dermatome in shingles
t1-l2
74
break between topical steriod course in psoriasis pt
4 weeks
75
lupus pernio asociation
sarcoidosis
76
tx of MRSA carrier once identified
nasal mupirocin 2% in white soft paraffin tds for 5 days skin chlorhexidine gluconate od 5 days apply all over but esp axilla, groin, perineum
77
eczema findings
erythematous scaly excoriations lichenification crust and weeping if infected
78
ezcema tx
emmolients topical steroids sedating antihistamines paste bandaging more severe tacrolimus (calcineurin) phototherapy oral steroids immunosuppresants - steroids azathioprine methotrexate
79
types of psoriasis
chronic plaque guttate flexural pustular erythrodermic
80
where else to check for psoriasis
scalp nails other extensor surfaces
81
1st line topical psoriasis tx
emmolients steroids clobet for face n flexures bet for trunk and limbs vit d analogue - calcipotriol vit a anal - dithranol. taxarotene coal tar
82
scalp psoriasis tx
mild = coal tar shampoo severe flare = potent steroid then scale removal agent ie salicylic acid or emollient then vit d analogue
83
moderate psoriasis ie 2nd and 3rd line tx
2nd line phototherpy (UVB --> PUVA+UVA) 3rd line methotrexate ciclosporin in flares acitretin if still unresponsive = biologics
84
psoriasis when to refer to dermatologist
Suspected generalised pustular psoriasis (emergency) - Suspected erythrodermic psoriasis (emergency) - Uncertainty about diagnosis - Extensive involvement / more than 10% of body surface area affected - Moderate or severe disease - Resistance to topical drug treatments in primary care - Intolerance to topical drug treatments in primary care - Significant impact on physical, psychological or social wellbeing
85
psoriatic arthritis when is pain worst
in the morning
86
erthema multiforme
target lesions palms soles and limbs 1-2 wks after either ifxn or dx ie SNAPP sulphonanamides NSAIDs allopurinol penicillin phenytoin
87
common places onhead for scc
ear lip
88
shingles complication
post herpertic neuralgia
89
pressure sores grade
g1 - non blanchinh erthema over intact skin g2 - partial thickness skin loss g3 - full thickness skin loss extending to sc fat g4 - extensive destruction with involvement of muscle bone and supporting tissue
90
rf pressure sores
smoking obesity cvd disease neuro deficit poor nutrition immobilty
91
pressure sore mx
nutrition abx if infxn regular dressings pain relief positioning pressure releiing mattress/chair
92

finals (28 decks)

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