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discoloration of the skin in persons subjected to louse bites over long periods.
excoriations and melanoderma caused by scratching the bites of the body louse, Pediculus corporis.
par·a·sit·ic mel·a·no·der·ma(par'ă-sit'ik mel'ă-nō-dĕr'mă)
Discoloration of the skin caused by exposure and scratching owing to the presence of lice.See: pediculosis corporis