Rheumatoid Arthritis or Psoriatic Arthritis?

How do you differentially diagnose Rheumatoid Arthritis and Psoriatic arthritis?

Psoriatic arthritis and rheumatoid arthritis are both types of arthritis that can be easily confused. They are both autoimmune conditions in which the immune system attacks the joints, causing pain, swelling, and stiffness. They are, however, separate disorders.

Arthritis is a common cause of chronic joint pain and stiffness. There are marked different types of arthritis each of them having their own causes, complications, and symptoms.

Rheumatoid Arthritis and Psoriatic Arthritis can be easily confused but there are differences between them.

Some people who have PsA will also have psoriasis which a skin condition that causes skin lesions or plaques on their body.

These plaques would indicate that RA is likely not the cause of the pain.

However, some people may have PsA without having the skin condition.

Another difference is that PsA often progresses beyond the bones and joints and affects the tendons, nails, and eyes.

The primary difference, however, is how the symptoms present. For example, RA is typically symmetrical, which means that it affects joints on both sides of the body. So if RA affects the wrists, it will usually affect both wrists.

PsA, on the other hand, is asymmetric, meaning that it may only cause pain in the left knee or the right wrist, for instance.

To be more sure A rheumatoid factor (RF) test can be conducted to confirm which of the two conditions is present. RF proteins are found in people with RheumatoidArthritis, while people with PsoriaticArthritis typically do not have the protein. The absence of RF, known as seronegative RA, is recognized in 20-30 percent of people with classical clinical RA. So in such cases the symptoms would indicate which of the condition the subject is having.


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