Psoriatic arthritis (PsA) is a type of arthritis that ... Blood tests for rheumatoid factor are almost always negative. Distal interphalangeal (DIP) predominant PsA mainly affects the DIP joint ...

Psoriatic arthritis (PsA) develops in four stages ... important for understanding how an individual's PsA may progress. Distal PsA affects the small joints in the fingers and toes, often causing ...

Uncertainty about future care and life impacts were among the top concerns for patients with psoriatic arthritis, but not for physicians, who highly prioritized individual symptoms, according to data ...