Spondyloarthritis can be considered one of the prototypes (besides rheumatoid arthritis) of an inflammatory rheumatic disease. The locomotor system is prominently involved with arthritis, enthesitis, dactylitis, sacroiliitis, and/or axial disease; but besides the rheumatologic component, other body systems are frequently affected. Extra-articular manifestations are all the medical conditions and symptoms that are not directly related to the locomotor system. Besides inflammatory bowel diseases, the major concept-related extra-articular manifestations are located in the eye (acute anterior uveitis) and the skin (psoriasis). This review focuses on the possible implications of these nonrheumatologic manifestations regarding the treatment of spondyloarthritis.
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