derm Flashcards
what do eczema herpeticum rash look like?
Eczema herperticum rash can be described as monomorphic punched-out erosions (circular, depressed, ulcerated lesions) usually 1–3 mm in diameter
what is the tx for acute porphyria cuteanea tarda
chloroquine
venesection
preferred if iron ferritin is above 600 ng/ml
which drugs can worsen psoriasis?
NABILA::
NSAIDS
Anti-malarials (chloroquine)
B.blocker
Infliximab, Interferon
Lithium
ACEIs
tx for acne during preganancy?
erythromycin may be used in pregnancy
drugs that trigger steven johnson
penicillin
sulphonamides
lamotrigine, carbamazepine, phenytoin
allopurinol
NSAIDs
oral contraceptive pill
what is seen on skin biopsy of dermatitis herpatiformis
direct immunofluorescence shows deposition of IgA in a granular pattern in the upper dermis
what is the cause of tinea capitis?
Trichophyton tonsurans
Microsporum canis
what is the tx for tinea capitis?
terbinafine for Trichophyton tonsurans infections and griseofulvin for Microsporum infections. Topical ketoconazole shampoo should be given for the first two weeks to reduce transmission
typical triad of pellagra
dermatitis, diarrhoea and dementia
tx for Rosacea
erythema/flushing - topical brominide gel
mild-to-moderate papules - topical ivermectin
moderate to severe papules
combination of topical ivermectin |+ oral doxycycline
conditions associated with seborrhic dermatitis
HIV
Parkinson’s disease
skin biopsy findings of bullous pemphigoid
immunofluorescence shows IgG and C3 at the dermoepidermal junction
tx for chronic plaque psoriasis
1st line - a potent corticosteroid applied once daily plus vitamin D
2nd line - vitamin D analogue twice daily
3rd line - potent corticosteorid applied twice daily
tx for keloid scar
early keloids may be treated with intra-lesional steroids e.g. triamcinolone
