Coexistence of familial Mediterranean fever and psoriasis in a patient with seronegative spondyloarthropathy.

Familial Mediterranean fever (FMF) is a self-limited disease characterized by fever and polyserositis attacks. Arthritis caused by synovitis is either in acute monoarthritis or chronic mono-oligoarthritis form, usually affecting the lower extremities. Another potential but rare form of involvement is spondyloarthropathy (SSpA). Psoriatic arthritis (PsA) is inflammatory arthropathy of peripheral joints, spine and enthesis areas. Some PsA cases are classified as psoriatic spondyloarthropathy. A 43-year-old male patient with concomitant FMF and psoriasis presenting with bilateral sacroiliitis, chronic hip and knee arthritis has been presented along with follow-up findings and treatment options used.