Common Derm disorders and infections Flashcards
(50 cards)
Atopic dermatitis or eczema s&s?
red, itchy, dry, onset usually early childhood.
pruritic, erythematous dry patches of skin, often scale. can get lesions that ooze and crust.
atopic dermatitis tx?
- moisture
- avoid hot water and harsh soaps with scents
- moisturizing cream
- light weight cotton clothes
- topical steroids, BID 3-4 weeks, hydrocortisone 1%
- antihistamiens - benadryl 6-8 hours and hydroxyzine
- chronic - can use tacrolimus and primecrolimus
Psoriasis vulgaris S&S? Triggers?
thick silvery erythematous scales, r//t immune disorder
location - extensor extremities, scalp, sacrum
triggered by NSAIDs, BB, prednisone, lithium
Psoriasis vulgaris tx?
first-line - topical steroids (moderate to high potency) such tramcinolone 0.1%, behthamesone 0.05%. BID - TID for 2-3 weeks.
along with calcipotriene (vitamin D) or coal product ALSO moisture
- still symptomatic tazorotene, anthralin, vitamin D, UVB/A light, oral retinoids or methotrexate if severe involving large body area. , cyclosporine limit use due to nephrotoxicity
TNF antagonists - etenarcept, infliximab and adalimumab
herpes zoster description?
vesicles along dermatome with eythematous base. rupture and crusts call off in 2-3 weeks.
HZ tx?
pain management - tylenol 3
post herpatic neuralgia - neurotin, tegretol, elavil
cool compress
antiviral pills within 48 hours (acyclovir 800 mg 5 times a day for 7-10 days)
zoster vaccine if > 60 years
hand-foot-mouth disease s&s?
oral lesions, sore throat, low grade fever, swollen cervical lymph
hands and feet - small reddish flat or slightly raised surrounded by reddish halo
Tx tinea capitis?
griseofulvin 20-25 mg/kg/day 6-8 weeks
selenium sulfide 1% shampoo QID x 2 weeks then twice weekly
tx tinea corpis?
lotrin 1% BID until 7-10 days after rash clears
Accutane dose for acne?
PO 0.5-2 mg/kg daily divided in two doses for 15-20 weeks
Oral antibiotics for acne?
tetracycline 500 mg BID, doxycycline, erythromycin
topical antibiotics for acne?
clindamycin or erythromycin
or benzoyl peroxide + clindamycin once daily at HS
Tinea vesicolor s&s?
light brown or white scaling spots. r/t yeast and increased fatty acid in skin. In microscope see hypea and spores.
tx tinea vesicolor?
selenium sulfide lotion 2.5% 10 min daily x 7
doesn’t resolve can try antifungals such as clotrimazole (lotrimin), ketoconazole, oral -terbinafine (lamisil)
Onychomocyosis s&s?
yellow thick white crumbly nail.
onychomocyosis tx?
Oral: terbinafine 250 mg daily x 6 weeks
itraconazole 400mg daily x 7 days each month for 2 months
itraconazole 200 mg daily x 2 months
griseofulvin 250 mg TID x 6 months (check LFTs)
Topical: ciclopirox (penlac)
tinea pedis s&s?
white, soft, peels, scaling on toes, webbing, and sole of foot.
tinea pedis tx?
topical antifungals:
butinafine (lotrimin)
terbinafine (lamisil) 250 mg daily, 6-12 weeks
cool compress
impetigo s&s?
vesicles which break and form honey-colored crusts.
seborrheic dermatitis tx?
head - antidandruff shampoo. nizoral 1%. topical steroid short term.
face, trunk and pther regions can use topical 3% ketoconozale cream or sodium sulfacetamide wash. if doesnt help try topial 1-2.5% hydrocortisone.
pityriasis rosea
oval dermacarted salmon-colored patches ith fine collarette scale, may be preceded by herald patch
pityriasis rosea tx?
symptom management w/antipruritics
seborrheic dermatitis s&s ?
moist papules covered in greasy scales that may coalesce into red patches and plaques. often non pruritic and mildly erthematous plaques with waxy, yellow scale on face.
cellulitis description?
localized painful expanding erythema and edema, may have pustules or vesicles
