Carpal tunnel syndrome more common in patient with psoriasis arthritis? does it have any impact on treatment for cts if you have psa?

Yes: If the wrist has arthritis or the skin near the wrist is inflamed you would expect carpal tunnel syndrome much more commonly than normal. The medical treatment involves controlling the psoriatic arthritis systemically, injecting the wrist with a corticosteroid if necessary, and splitting the wrist. Surgery would be a last resort but only if medical treatment fails..