The Difference Between Osteoarthritis and Psoriatic Arthritis

Arthritis is a general term to describe the inflammation on the joint. There are more than 100 types of arthritis, and they can affect other parts of the body other than the joints. For example, psoriatic arthritis is an autoimmune disease that psoriasis patients might develop.

It might not seem obvious, but there are differences between each type of arthritis. In this article, we’re going to talk about the differences between osteoarthritis and psoriatic arthritis.


As stated above, psoriatic arthritis is an autoimmune disease that affects psoriasis patients. Typically, patients already have psoriasis before developing symptoms of psoriatic arthritis. There is no known reason why this occurs.

On the other hand, osteoarthritis usually happens in elderly patients. The gradual deterioration of the cartilage at the end of the bones causes it. When the cartilage is completely gone, friction between the bones results in irreversible damage to the bones, pain, and stiffness.

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While both conditions cause swollen joints, there are other unique traits only occur in these diseases respectively.

It is common knowledge that patients with psoriatic arthritis suffer from red, scaly skin, but their nails may also become pitted, which doesn’t happen to patients with osteoarthritis. Psoriatic arthritis patients are also at risk of uveitis, a condition when the uvea is inflamed.

Symptoms that only occur due to osteoarthritis include deformation of the joint, which means the changes in the shape of joints. There is also usually a clicking sound when osteoarthritis patients bend their joints.

Risk factors

The people at risk of psoriatic arthritis or osteoarthritis may belong to different groups of people.

Psoriatic arthritis tends to affect people aged 30 to 50, while osteoarthritis is more common in the elderly. Osteoarthritis also occurs more often in female patients.

Injury, infections and autoimmune conditions may trigger psoriatic arthritis, but the wear and tear of cartilage by extreme movements or weight usually cause osteoarthritis.

Final thoughts

Although there is no cure for both psoriatic arthritis and osteoarthritis, patients can manage the diseases with medications, therapies and lifestyle changes. In extreme cases, joints may be replaced with surgery.

Learn more about psoriasis and psoriatic arthritis by visiting