Erythema chronicum migrans.
D000293:Adolescent; D002908:Chronic Disease; D004890:Erythema / Q000188:drug therapy; D006801:Humans; D008297:Male; D010402:Penicillin G Procaine / Q000627:therapeutic use; D010404:Penicillin V / Q000627:therapeutic use
D010402:Penicillin G Procaine; D010404:Penicillin V