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Dermatology

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Infection

Question
27 out of 32
 

Most common cause of Ecthyma Gangrenosum is : (LQ)



A Pseudomonas
B Group A streptococci

C Staph. Aureus
D Corynebacterium

Ans. A
Pseudomonas

Ecthyma Gangrenosum

1). Edematous papules change into central purpura (palpable).

2). MC organism: Pseudomonas aeruginosa

Extra Edge:

1). Ecthyma

a. Deep infection of skin & involves extra follicular portion (i.e. hair follicles spared).

b. MC seen on buttocks, thighs & legs.

c. MC organism: GpA streptococci.

2). Erysipelas

a. Inflammation of lymphatics of skin caused by streptococcus

3). Erythrasma

a. Chronic superficial infection of skin with mild erythematous patches in axillae, groins, toes webs.

b. Caused by corny bacterium minutissimum (produces porphyrins --> coral red fluorescence on-wood lamp).

c. TOC: Oral erythromycin.

Infection Flashcard List

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