title: Arthritis complicating varicella infection.
mesh_terms: D001170:Arthritis, Infectious / Q000175:diagnosis / Q000209:etiology*; D002644:Chickenpox / Q000150:complications* / Q000175:diagnosis; D002648:Child; D003937:Diagnosis, Differential; D006801:Humans; D007719:Knee Joint; D008297:Male; D012698:Serologic Tests; D013582:Synovial Fluid / Q000032:analysis