Has the back or buttock pain lasted for at least three months?
& Arthritis CentreBook appointment
Patient self-check
Could your back pain be inflammatory?
Ankylosing spondylitis often begins with a distinctive pattern of back or buttock pain. Answer these questions to understand whether a rheumatology assessment may be helpful.
Did the back or buttock pain begin before the age of 45?
Inflammatory back-pain features0/5 answered
Did the back or buttock pain begin before the age of 40?
Did the pain start gradually rather than after a specific injury?
Does movement or exercise improve the pain?
Does rest fail to provide clear relief?
Does the pain wake you at night and improve after getting up?
Supporting clues
- Alternating pain in the right and left buttock
- Heel pain or tenderness where a tendon joins the bone
- A painful red, light-sensitive eye or previous uveitis
- Psoriasis, inflammatory bowel disease, or swollen joints
- A close family member with ankylosing spondylitis or related arthritis
- Marked improvement within 24–48 hours of an anti-inflammatory medicine
Urgent eye symptom: A painful red eye with light sensitivity or blurred vision needs prompt medical assessment.
Examination and tests
- Spinal movement, chest expansion, joints and tendon insertions
- CRP and ESR inflammation tests
- HLA-B27 blood test when clinically appropriate
- X-ray of the sacroiliac joints
- MRI of the sacroiliac joints when an X-ray is normal or unclear
A normal CRP, ESR, X-ray or negative HLA-B27 result does not by itself exclude axial spondyloarthritis.