Infestation of the pubic area with the crab louse (Pthirus pubis) is most frequently seen as the result of transmission by sexual intercourse, although it may also be transmitted by clothing, bedding, or towels. Itching is the principal symptom, but eczematization or secondary infection may also occur. Blue-grey macules (maculae cerulae) are occasionally seen on the skin. Crab lice may also involve the eyelashes, beard, axillary, and other body hairs. Close inspection of affected areas reveals lice grasping hairs close to the skin surface and louse eggs.
Pediculosis Pubis, Phthiriasis
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