Taxonomy: Order Phthiraptera (lice)
Animal: Pediculus humanus var. capitis (pathology) 3 09.jpg
Sites: Skin
Pediculus humanus var. capitis infestation - severe pediculosis capitis with nits and adult lice. Note the matted hair and purulent discharge. Ped. humanus var. capitis is not confined to the head but also occurs on the body cf. Ped. humanus var. corporis which only occurs on the body. The eggs of both are similar; var. capitis adults tend to be smaller (male 2mm, female 2.8-3mm), browner in colour and the antennae segments not so elongate. The body louse is an important vector of typhus fever, trench fever and louse -borne relapsing fever.

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