Psoriasis can be accompanied by a form of arthritis called Psoriatic Arthritis which causes inflammation and swelling in the small joints of hands and feet. Knees and elbows can also be involved. About 10 % of the people with Psoriasis may suffer with psoriatic arthritis.
Anyone who has psoriasis and joint pain may have psoriatic arthritis. The signs and symptoms of psoriatic arthritis are:
The red, inflamed skin of psoriasis.
Pain and swelling in the joints that is worse in the morning or after rest. Stiffness lessens with activity.
Sausage-like appearance in the affected fingers and toes (in severe cases.)
Pitting (small indentations on the nail) or the nails may be pulling away from the nail beds. Nails may have ridges or a yellowish-orange discoloration