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.

Synonyms: Arthropathy, Psoriatic, Psoriasis, Arthritic, Arthritis, Psoriatic, Psoriatic Arthropathy, Psoriatic Arthropathies, Arthritic Psoriasis, Arthropathies, Psoriatic, Psoriasis Arthropathica, Psoriatic Arthritis