Psoriatic arthritis.
D001168:Arthritis / Q000150:complications* / Q000175:diagnosis / Q000628:therapy; D001172:Arthritis, Rheumatoid / Q000175:diagnosis; D003937:Diagnosis, Differential; D006801:Humans; D011565:Psoriasis / Q000150:complications* / Q000235:genetics; D012737:Sex Factors; D009626:Terminology as Topic