Dermatology Flashcards
(28 cards)
Clinical hallmark of acne
Comedone
Traumatized area often develops lesions of psoriasis
Koebner phenomenon
Removal of scale causes pinpoint bleeding in psoriasis
Auspitz sign
Mutation of this protein occurs in atopic dermatitis
Filaggrin
Cornerstone in the management of atopic dermatitis
Use of emollients especially immediately after bathing
Typical location of stasis dermatitis
Medial aspect of the ankle
Lateral pressure applied on border of intact blister results in dislodgment of normal epidermis and extension of
blister in SJS and TEN
Nikolsky sign
SJS/TEN involving <10% BSA
SJS
SJS/TEN involving 10-30% BSA
SJS/TEN overlap
SJS/TEN involving >30% BSA
TEN
Drugs involved in SJS/TEN syndrome
- Sulfonamides
- Allopurinol
- Nevirapine
- Antiepileptics (Lamotrigine, Phenytoin,
Carbamazepine) - Beta-lactams
- Oxicam NSAIDs
Best initial test for herpes simplex and herpes zoster
Tzanck smear
Most accurate test for herpes simplex and herpes zoster
Viral culture
Most commonly affected dermatome in herpes zoster
Thoracic area
Most common single nerve involved in herpes zoster
Trigeminal nerve
Oral antivirals must be initiated within this period from the onset of rash
First 72 hours of rash
Causative agent of tinea versicolor
Malassezia furfur
Presence of satellite lesions
Candidiasis
Most common infectious complication of varicella
Secondary bacterial superinfection
Most serious complication of varicella
Pneumonia
Herald patch, Cigarette paper lesions, Christmas tree pattern at the back
Pityriasis rosea
Secondary syphilis condyloma (acuminata vs. lata)
Condyloma lata
HPV or anogenital warts condyloma (acuminata vs. lata)
Condyloma acuminata
Area involved in scabies
Circle of Hebra
* Web spaces of fingers
* Flexor aspect of wrist
* Cubital fossae
* Anterior axillary folds
* Nipple
* Periumbilical fold
