Dermatology

Question 1

What are the 3 main functions of skin?

Answer 1

Protection, regulation and sensation.

Question 2

What is oral isotretinoin?

Answer 2

Retinoid for treatment of severe acne vulgaris. Concentrated vitamin A. Reduces sebum, plugging and bacteria. Standard course for 16 weeks, 1mg/kg. Pregnancy prevention programme in women.

Question 3

Name endogenous eczema/ dermatitis types

Answer 3

Atopic, seborrhoeic, discoid, varicose, pompholyx

Question 4

Name exogenous eczema/dermatitis types

Answer 4

Contact (allergic, irritant), photoreaction (allergic, drug).

Question 5

Name some common allergens in contact dermatitis

Answer 5

Nickel, chromate, cobalt, colophony, fragrance

Question 6

What is psoriasis?

Answer 6

A chronic relapsing and remitting scaling skin disease which may appear at any age and affect any part of the skin. Prevalence: 1.5-3%. T cell mediated autoimmune disease.

Question 7

Acute drug rashes- common drugs

Answer 7

Antibiotics (penicillins, trimethoprim), NSAIDs, chemo agents, Psychotropic eg. chlorpromazine, anit-epileptic (lamitrigine and carbamaz) cardiac.

Question 8

Cellulitis

Answer 8

A bacterial infection of the deep layers of skin.

Question 9

Acne

Answer 9

A common inflammatory disorder of the sebaceous glands. Papules, Pustules, Comedones (black heads), Erythema, Nodules, Cysts and Scarring

Question 10

Eczema

Answer 10

A common itchy red skin disease characterised by erythema and vesicle formation.

Question 11

What is a Keloid scar?

Answer 11

A surface skin scar resulting from an overgrowth of granulation tissue.

Question 12

What are Osler’s nodes?

Answer 12

Immune depositions in the hands and feet, typical of infective endocarditis.

Question 13

What are the subtypes of acne vulgaris?

Answer 13

• Papulopustular
• Nodulocystic
• Comedonal