Psoriatic Arthritis

An inflammatory arthritis associated with psoriasis, causing joint pain, stiffness, and swelling.

✦ AI summary

Here's what these sources say about psoriatic arthritis (PsA): **What it is and who gets it:** PsA is a chronic, progressive inflammatory disease linked to psoriasis that affects joints, the areas where tendons/ligaments attach to bone (entheses), and sometimes the spine [5]. Research suggests PsA develops in up to a third of people with psoriasis over time, with one clinic-based study finding about 14% of psoriasis patients had it; nail changes and elevated inflammation markers (CRP) were more useful clues for joint involvement than a genetic marker (HLA-B27), which had limited predictive value in this population [12]. **Underlying biology:** Studies are exploring the immune and genetic mechanisms behind PsA, including differences in immune cell gene activity compared to related arthritis types [1], genetic variants that may predict how well someone responds to certain biologic treatments [5], and possible links between environmental chemical exposure (like bisphenol A) and immune dysregulation in PsA, though this connection wasn't statistically significant in population data [11]. **Treatment research:** Several studies report on long-term biologic and targeted therapies. A 5-year trial found the oral medication upadacit

This is an AI-generated summary of the sources below — not medical advice. Always talk to a doctor or pharmacist about your own situation.

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