Fever, pain, and decreased range of motion in the sacroiliac joint
are the most common symptoms. Sometimes the sacroiliac joint
pain can be mistakenly attributed to another source, such as septic hip, psoas abscess, malignancy, sciatica, herniated disc, pyelonephritis, ankylosing spondylitis or appendicitis.
Characteristic radiographic features include joint space narrowing, sclerosis, and erosions of the ilium and sacrum.