Pediculosis corporis: an ancient itch.

Lice are obligatory parasites surviving on blood meals obtained from the host, with their mouthparts modified to enable piercing and sucking. The infestation with body lice, also known as pediculosis corporis, is a common worldwide problem that affects people of all races. Body lice are preferentially seen in cold climates, under conditions of poor sanitation and crowding. Pediculosis corporis is not only a disease in itself, but it can also be a source of bacterial infections. The hallmark of pediculosis corporis is pruritus and pyoderma of clothing covered areas. A more general reaction of fever, headaches, a diffuse rash, fatigue, and myalgias may appear a few weeks or months after the beginning of the parasitism. Treatment is comprised of improved hygiene and laundering of all the infested clothing, bedding and linens in hot water. Medical treatment involving pediculicides is required in large-scale infestations.