Is psoriatic arthritis the same as rheumatoid arthritis?
No, psoriatic arthritis (PsA) and rheumatoid arthritis are not the same, though they share similarities. Both are inflammatory autoimmune conditions that cause joint pain, stiffness, and swelling, but they have important differences.
Key differences include:
* Skin Show Full Answer
Is psoriatic arthritis the same as rheumatoid arthritis?
No, psoriatic arthritis (PsA) and rheumatoid arthritis are not the same, though they share similarities. Both are inflammatory autoimmune conditions that cause joint pain, stiffness, and swelling, but they have important differences.
Key differences include:
* Skin involvement: PsA is connected to psoriasis, a skin condition causing scaly, red patches. Most people develop psoriasis before PsA symptoms appear, though not always.
* Joint patterns: RA typically affects joints symmetrically (both sides of the body) and commonly impacts hands, wrists, and the neck area of the spine. PsA tends to be asymmetric and more often affects feet, lower back, and the joints closest to fingernails and toenails.
* Unique PsA features: PsA can cause dactylitis (sausage-like swelling of fingers or toes) and nail changes like pitting or ridges.
* Blood tests: About 80% of people with RA test positive for rheumatoid factor or CCP antibodies (seropositive), while most people with PsA test negative for these markers.
While some treatments overlap, certain medications work specifically for one condition but not the other. It's even possible to be misdiagnosed with one when you have the other, so working closely with your rheumatologist is important for accurate diagnosis.
January 8
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