Atlas One · Host Biology · Scale 07 — System

Psoriatic Arthritis

Seronegative inflammatory arthritis in ~30% of psoriasis patients; 5 clinical patterns; CASPAR criteria. Driven by IL-17A, IL-23, TNF-α, and IL-36 axes targeting skin, entheses, and joints. Approved biologics: anti-TNF, anti-IL-17A, anti-IL-23, anti-IL-12/23, JAK/TYK2 inhibitors.

Also known as: PsA, psoriatic spondylitis, psoriatic spondyloarthritis

Scale 07 — SystemScale
draftStatus
2026-06-07Last Reviewed
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psoriatic-arthritis

Psoriatic Arthritis

Seronegative inflammatory arthritis in ~30% of psoriasis patients; 5 clinical patterns; CASPAR criteria. Driven by IL-17A, IL-23, TNF-α, and IL-36 axes targeting skin, entheses, and joints. Approved biologics: anti-TNF, anti-IL-17A, anti-IL-23, anti-IL-12/23, JAK/TYK2 inhibitors.