Campylobacter enteritis and erythema nodosum.
D000293:Adolescent; D002169:Campylobacter Infections / Q000150:complications*; D002648:Child; D004751:Enteritis / Q000150:complications*; D004893:Erythema Nodosum / Q000209:etiology; D006801:Humans; D008297:Male; D014581:Urticaria / Q000209:etiology