Persistent insect bites.
D000328:Adult; D003877:Dermatitis, Contact / Q000209:etiology; D006801:Humans; D006968:Hypersensitivity, Delayed; D007299:Insect Bites and Stings / Q000276:immunology* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D014581:Urticaria / Q000209:etiology