Dermatology

Question 1

What is the most common causative fungal organism resulting in Seborrhoeic dermatitis?

Answer 1

Malassezia furfur

Question 2

A non-healing painless ulcer associated with a chronic scar is indicative of

Answer 2

Squamous Cell Carcinoma

Question 3

What are the two most common complications of Seborrheic Dermatitis?

Answer 3

Blepharitis and Otitis Externa

Question 4

How to differentia Steven Johnsons Syndrome from Staphylococcal scaled skin syndrome?

Answer 4

Steven Johnson = Mucosa Involvement
SSS = no mucosal involvement

Question 5

itchy, chronic, recurrent, often symmetric eruption on the palms of hands, fingers, and soles of the feet. It is characterised by small, deep-seated, 1–2 mm fluid-filled vesicles on these sites, which resolve after several weeks with scaling.

Answer 5

Dyshidrotic eczema (pompholyx)

Question 6

Tx for Mild/Moderate Rosacea?

Answer 6

Topical Ivermectin

Question 7

Tx of moderate/severe rosacea with papules/pustules?

Answer 7

combination of topical ivermectin + oral doxycycline

Question 8

What deficiency is associated with Dermatitis in the acral, peri-orificial or perianal region?

Answer 8

Zinc

Question 9

What organism is commonly implicated in pityriasis rosea?

Answer 9

Herpes hominis virus 7 (HHV-7)

Question 10

Pyoderma Gangrenosum
-Definition?
-Common Associations
-Management?

Answer 10

-rare, non-infectious, neutrophilic dermatosis characterized by painful, necrotic ulcers with a rapidly progressive course. It is often associated with systemic diseases.
-UC/Crohns/Haematological malignancy
-Corticosteroids

Question 11

Porphyria cutanea tarda
-Pathophysiology?
-Associated with what hepativiral condition?
-Presentation?
-Investigations?
-Management?

Answer 11

-Defect in uroporphyrinogen decarboxylase
-Hepatitis C
-Photosensitive rash, blistering and skin fragility
-urine: elevated uroporphyrinogen and pink fluorescence of urine under Wood’s lamp
-Chloroquine/Venesection

Question 12

Pityriasis versicolor
-Responsible fungal infection?
-Tx?

Answer 12

-Malassezia furfur
-Ketoconazole shampoo

Question 13

What conditions are Acanthosis Nigricans associated with?

Answer 13

Gastric Adenocarcinoma
PCOS
Acromegally
T2DM
Cushings
Hypothyroidism

Question 14

Tx lines for Acne?
1st line?
2nd Line?
3rd Line?
4th Line?

Answer 14

-Topical retinoids/Benzoyl Peroxidase
-Combination of topical agents
-Oral ABX
-Oral Isotretinoin

Question 15

Dermatitis Herpetiformis
-Pathophysiology?
-Trigger?
-Tx?

Answer 15

-IgA autoantibodies directed against tissue transglutaminase
-Gluten ingestion in predisposed individuals (HLA-DQ2/DQ8)
-Gluten free diet