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Dermatology

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Infection

Question
7 out of 32
 

For pediculosis corporis the treatment of choice is: (LQ)



A Disinfection of clothes

B Four applications of benzyl benzoate

C One application of benzyl benzoate

D Three applications of gamma benzene hexachloride

Ans. A
Disinfection of clothes

1). Pediculosis corporis (Pediculosis vestimentorum) "lives" on the undersurface of clothing and to which it attaches its eggs. Sometimes the eggs are fastened to the lanugo hairs of the midline of the back and, if infestation is heavy, even to the pubic and axillary hairs.

2). The "necks" of the garments and their seams are the most favored sites. The life of the adult is about 4 weeks and during this time a female will lay 200-300 eggs. It lives on the underclothing and ''visits'' the skin only for food.

3). That is why it tends to bite those areas which are in close contact with underclothes (upper part of shoulders and upper part of buttocks). At the site of the bite there is a visible minute red macule which irritates greatly. The linear scratch marks caused by itching are very characteristic and are sufficient for diagnosis. With time the Pediculosis corporis and the itching caused by it produces thickening and pigmentation of skin (Vagabond's disease).

4). Treatment is directed towards disinfecting all the clothes and not to the patient. The clothes should be either boiled or insufflated with 5% DOT powder or 1 % gamma benzene hexachloride or 0.25% malathion.

5). The excoriations on the trunk should be treated with application of calamine lotion or topical corticosteroids with an antibiotic along with a systemic antihistaminic for pruritus.

Infection Flashcard List

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