Psoriatic arthritis is a long-term problem of the joints. It causes pain and swelling in the joints. Over time, it can be damaging to the joints and lead to disability.
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Psoriatic arthritis is linked to a skin condition called psoriasis. Not everyone with psoriasis will develop psoriatic arthritis. The exact cause is not known. A combination of genes and factors in the environment may play a role.
The damage to the joints is caused by the body's own immune system. The immune cells target and attack joint tissue. Conditions like this are called auto-immune diseases. It is not clear why it happens in some people.
The risk of psoriatic arthritis is increased with:
Psoriasis is often present. Symptoms of psoriatic arthritis include:
You will be asked about your symptoms and health history. The doctor may ask about psoriasis history. A physical exam will be done. Your doctor will rule out other joint problems with the physical exam.
To look for signs of inflammation and a cause your doctor may order:
Images of the joint may also be done to look for damage. Tests may include:
The goal of treatment is to ease symptoms and slow damage to the joint. Options may include:
Medicine may help to manage symptoms and flare ups. It can also slow damage to joint. Options include:
Physical or occupational therapy may help with movement of the joint. They can also help to find better methods for everyday tasks that cause pain.
Too much weight can cause more stress on joints. A dietitian can help to make healthy meal plans to lose weight.
Long term painful conditions can be stressful. Mental health therapy may be helpful to ease stress and anxiety.
Surgery may be needed for severe pain and disability. It may help to remove damaged tissue and improve function of hands.
There are no current guidelines to prevent psoriatic arthritis.
National Psoriasis Foundation
The Arthritis Society
Canadian Rheumatology Association
Psoriatic arthritis. Arthritis Foundation website. Available at:
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Accessed December 18, 2017.
Psoriatic arthritis. EBSCO DynaMed Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T113795/Psoriatic-arthritis . Updated April 11, 2016. Accessed December 18, 2017.
Psoriatic arthritis. National Psoriasis Foundation website. Available at: https://www.psoriasis.org/psoriatic-arthritis. Accessed December 18, 2017.
Last reviewed November 2018 by
EBSCO Medical Review Board
Michael Woods, MD, FAAP
Last Updated: 12/20/2014