DERM

Question 1

Multiple papules and pustules around hairs on chest and neck, patient is HIV positive

Answer 1

Eosinophilic folliculitis
(only seen in immunocompromised patients)

Question 2

Melanoma on the sole/palm/nail bed

Answer 2

Acral lentiginous melanoma
(v rare but most common melanoma in dark skin.
no association with UV exposure)

Question 3

How does candida albicans affect
1. Babies
2. The elderly

Answer 3

1. Causes nappy rash
2. Rash at the sub-mammary folds, the groin and the axilla.

(Red rash with some satellite lesions and sometimes pustules)

Question 4

Commonest infectious cause of erythema multiforme ?

Answer 4

Herpes simplex virus

Question 5

New medication started. Purple, flat-topped, papules across her trunk. Rash is intensely itchy.
Diagnosis?
Probable cause?

Answer 5

Lichenoid eruption

due to an anti-hypertensive such as beta-blockers, thiazides, ACEIs)

Question 6

Infant.
Last 24 hours, febrile, widespread erythema, large fluid filled blisters across his body, many of which have ruptured, patches of desquamation, Nikolsky sign is positive, marked crusting and fissuring around his mouth, oral mucosa is unaffected

Answer 6

Staphylococcal Scalded Skin Syndrome (SSSS)

Question 7

Causative organism for pityriasis (tinea) versicolor ?

Answer 7

Malassezia furfur

Question 8

Treatment for pityriasis versicolor?

Answer 8

Topical antifungals such as ketoconazole