Necrotic arachnidism.
D000328:Adult; D000842:Ankle; D006801:Humans; D008297:Male; D009336:Necrosis / Q000473:pathology; D001098:Spider Bites / Q000453:epidemiology / Q000473:pathology* / Q000628:therapy; D013111:Spider Venoms; D013112:Spiders; D014481:United States
D013111:Spider Venoms