Dermatology

Question 1

When are you worried about molluscum contagiosum?

Answer 1

1. High risk of HIV -> HIV testing
2. Ocular / eyelid involvement -> ophtal referral
3. At genital area -> GUM referral to exclude other STIs

Question 2

Antibiotics for acne?

Answer 2

Mild-moderate:
Topical clindamycin + topical benzoyl peroxide/tretinoin for 12 weeks

Moderate-severe:
As above OR
Oral doxycycline/lymecycline + topical benzoyl peroxide/adapalene

Pregnancy:
Oral erythromycin

Abx needs to be given alongside topical anti-inflammatories to avoid abx resistant

Question 3

Types of melanoma?

Answer 3

1. Superficial spreading - most common, young ppl
2. Nodular - middle aged, red, oozy, high risk of malignancy
3. Lentigo maligna - chronically sun exposed skin, elderly
4. Acral lentigus - dark skinned ppl, subungual

Question 4

Pellagra triad

Answer 4

Dementia, dermatitis, diarrhoea
(NIACIN DEFICIENCY)

Question 5

Organism causing pytyriasis versicolor?

Answer 5

Malassezia furfur

Question 6

Drugs causing alopecia

Answer 6

4Cs and 1 H
1. Cytotoxic drugs
2. Carbimazole
3. Colchicine
4. Heparin

Question 7

Mx for pityriasis versicolor

Answer 7

Topical ketoconazole —> oral itraconazole (if treatment resistant or recurrent)

Question 8

Drug causing drug-induced lupus

Answer 8

Chlorpromazine
Procainamide
Hydralazine
Quinidine

Question 9

Causes of acanthosis nigricans

Answer 9

1. Things making you fat
   DM, hypothyroidisim, acromegaly, Cushing’s, PCOS, obesity, Prader Willi
2. GI cancer
3. Drugs
   - COCP, nicotinic acid
4. Familial

Question 10

Drugs causing SJS/TEN

Answer 10

Please Save People Acquiring Crippling Necrolysis !

phenytoin (antiepileptics), sulphonamides (co-trimoxazole), penicillin ,Allupurinol ,carbamazepine,COCP , Nsaids

Question 11

Vitamin deficiencies
Selenium
Zinc
B12

Answer 11

Selenium - bald,weight gain(fat),joint pain – a monk doing yoga
Zink - pale,cold peripheries, red lips (pre-orifical erythematous lesions) – a vampire
VitB12 - smooth tongue – smooth talker