Body lice and their eggs are predominantly found on clothing and should be looked for in the seams of clothes. Pediculosis capitis is common among school children. Head lice are very rare among American blacks. Pediculosis corporis is now uncommon in developed countries. Pediculosis capitis is most frequent in children.
Pediculosis pubis is most common in sexually active adults.
Scratching may cause inflammation and a secondary bacterial infection. Found most often on the back of the head and neck and behind the ears. Eyelashes may be involved. Adult lice and nits found in the seams of clothing. Uninfected bites present as erythematous papules, 2-4 mm in diameter, with an erythematous base.