Derm Flashcards
Who are the typical people to come in for acne vulgaris? Where on the body is it? What bug is this?
males b/c increase of androgen
found: face, neck, back, upper arms
p. acnes
What are the types of acne vulgaris?
open: black heads
closed: white heads
How to tx acne vulgaris?
first line: benzoyl peroxide
2) topic retinoid
3) erythromycin
4) refer for systmic abx
Pt has telangiectases- how to tx?
rosacea
spider veins on face
tx: metronidazole; NO STEROIDS
Pt has skin that does not tan with other skin-what to expect on KOH prep?
tinea veriscolor
koh: “spaghetti and meatballs”
What is tinea veriscolor and how to tx?
fungal infxn - needs antifungal topical/systemic
How does the rosacea present unlike acne vulgaris?
rosacea: mid age, starts on the nose, NO COMEDOMES
Pt is under stress at work, greasy skin, and has pururitus w/patches- how to tx?
seborrheic DERMATITIS aka dandruff
tx: OTC selenium sulfide
Pt has OCD and washes hands every 5min- what are they at risk for? Tx?
IRRITANT contact dermatitis
Tx: topical corticosteroids
How to differentiate irritant vs allergic dermatitis? Examples?
irritant: RIGHT AFTER EXPOSURE
- spit, sweat
allergic: DELAYED after exposure
- ivy, nickel allergy
Baby has bib on and when you remove, you see a pink rash?
irritant contact dermatitis
What are the stages of contact dermatitis?
acute: may look like eczema
chronic: scaling, may look like psoarsis
hx is very important
Pt wife noticed a “ring worm” appearance on husband’s back and now it has spread everywhere; concerned that she “caught it”- what is the “ring worm”, what is the “spread”, can she “catch it”, tx?
pityriasis rosea ring worm- herald patch spreading-christmas tree fashion caught it-nope, not contagious tx-antihistamines for pruritis
Pt has a painful nodule on leg after infxn-tx?
erythema nodosum
tx: self-limiting
What can cx erythema nodosum?
strep infxn
syphilis
TB
sarcoidosis
Pt has “bulls eye lesions” that are pruritic and painful - cx?
erythema multiforme
cx: drugs or HSV infxn
How to tx erythema multiforme?
antihistamines
-if related to HSV: acylovir can prevent erythema multiforme
Erythema multiforme minor vs major?
minor: NO mucosal involvement
major: mucosal involvment
What is the most severe case of SJS? Cx? How to manage?
TEN is most severe
cx: drugs
manage: ICU/burn unit
What are the 4Ps of lichen planus? What to see on PE tongue? Tx?
Purple Pruritic Polygonal Papules "wickham straie" glucocorticoids
Which is the common wart that is found anywhere on skin and which is isolated to genitals?
anywhere-verruca vulgaris
genitals - condyloma acuminatum
How to tx warts?
freeze, excise
Central umbilication - what to check if child has it?
molluscum contagiosum
child abuse
Is molluscum contagiousum contagious?
YES
“Dewdrops on an erythematous base” -how does it present and how to tx?
herpes zoster
dermatone pattern
tx: acylcovir; vaccinate if possible
Pt has wart on foot - what are the two types?
verruca plantaris - pain w/ rough hyperkertotic surface
verruca plana - smooth papaules
Pt is back from a business trip and has a rash except head and neck; mostly on hands, wrist, ankles - when does it itch the most and how to tx?
scabies
itch is worst at night
tx: permethrin 5% overnight and clean out EVERYTHING
If permethrin doesn’t work for scabies?
lindane
Pt has been a PE teacher for 20yrs and didnt put on sunscreen and now there is a yellow brown nodule on face and sandpaper texture? Tx and caution? What can this lead to?
actinic keratosis/solar keratosis
tx: remove, even without sun more papules can occur
can lead to squamous cell carcinoma
What are the 3 Ps for basal cell carcinoma and how to tx?
Pearly
Pink
Papule
What are the types of basal cell carcinoma?
nodular-Pearly ulcerating- crusty sclerosing- whitish patch w/ill defined borders superficial- scaly plaques pigmented-hard dark lesions
Pt has been a lifeguard for 10yrs + well demarcated macules - hyperkeratotoic? Tx?
squamous cell carcinoma
tx: refer
Pt lived in HI until 25yo and complains about not tanning and always getting burned-highest risk for? What is the criteria?
malignant melanoma A-symmetery B-order C-olor D-iameter
Pt has dementia and is brought in by wheelchair b/c of recent hip replacement- what to check for? Complications? Preventions?
decibitus ulcers-dementia, recent surgery to become bed ridden
complication-necrosis of skin and bone
prevention- move pt q2hrs
Pt is 60-80yo has NO erythematous base under blister - What is it? Tx?
bullous pemphigoid
autoimmune disorder
tx: systemic prednisone
Baby has “cradle cap”-how to tx?
seborrheic dermatitis
tx: olive oil +baby shampoo
Pt has “dry” skin worse in the winter on the elbows, knees- what to see on PE? Pt tried peeling scale off and started to bleed-name? Tx?
psoriasis
PE: “well demarcated plaques overlying silvery scale”
Auspitz sign
tx: topical steroids - cannot cure, only manage
Pt has depigmented patches- associated with? Tx?
virtiligo
association: DM, hypothyroidism, pernicious anemia, addison dz
tx: sunscreen