- A type of inflammatory arthritis associated with psoriasis, often involving the axial joints and the peripheral terminal interphalangeal joints. It is characterized by the presence of hla-b27-associated spondylarthropathy, and the absence of rheumatoid factor.
- Joint inflammation associated with psoriasis.
- Syndrome of psoriasis in association with inflammation, arthritis; rheumatoid factor is usually not present in the sera of affected individuals.