Erythema chronicum migrans.
D004890:Erythema / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009461:Neurologic Manifestations; D010146:Pain; D010401:Penicillin G Benzathine / Q000627:therapeutic use; D013986:Tick Toxicoses / Q000175:diagnosis* / Q000188:drug therapy
D010401:Penicillin G Benzathine