Fatigue is common in all patients with an inflammatory arthritis such as psoriatic arthritis and rheumatoid arthritis. It is likely multifactorial. Medications, lack of mobility and exercise, sleep disturbance, chronic systemic inflammation and in some cases depression can all play a role. Sorting it out can be difficult. Associated thyroid problems and anemia should also be ruled out.
About Alan Matsumoto, M.D.
Part-time Faculty, Division of Rheumatology
Johns Hopkins University