Several small studies and case-reports have tested the effect of acupuncture on psoriatic arthritis, with overall positive results. Although high quality evidence is lacking, acupuncture is conditionally recommended by the American College of Rheumatology and the National Psoriasis Foundation.[1]
Exercise, yoga, stretching, and aqua therapy (because it tends to be easier on the joints to move around in water) are also helpful to improve overall health and to keep joints flexible.[2] Physical and occupational therapy can also help to strengthen muscles and increase flexibility, which can protect joints from further damage.