Meningococcal arthritis.
D000328:Adult; D001170:Arthritis, Infectious / Q000209:etiology*; D003937:Diagnosis, Differential; D006069:Gonorrhea / Q000175:diagnosis; D006801:Humans; D008297:Male; D008589:Meningococcal Infections / Q000175:diagnosis; D009345:Neisseria meningitidis / Q000302:isolation & purification