Pediculosis
The clinical appearance of a chronic body lice infestation - the brown discolouration is due to scratching and blood that has been ingested by the lice. Masses of lice are visible on the underwear seams (PL-patient1)
Keywords: Arm, Chronic body lice infestation, Ectoparasite, Excoriation marks, Generalised pruritus, Louse infestation, Male, Pediculus humanus corporis, Pediculus humanus humanus, Post-inflammatory hyperpigmentation, Skin discolouration, Sucking lice, Trunk, Vagabond disease
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Source: Dr Ian Coulson