What should you know about heel pain in ankylosing spondylitis?

Ankylosing spondylitis is an inflammatory condition that can affect entheses, the points where tendons and ligaments attach to bone. At the heel, this may involve the Achilles attachment or the tissue under the foot. Pain may be worse after rest or in the morning and may occur with joint stiffness, reduced range of motion, or discomfort in the back and other joints. Heel pain has other possible causes, so the pattern across your body, examination findings, and medical history matter.

Keep movement regular but adapt impact when the heel is flaring. Gentle ankle, calf, spinal mobility, and strengthening work can preserve function; a physiotherapist can tailor exercise therapy to your symptoms and capacity. Warm-water movement through hydrotherapy may feel easier when land exercise is uncomfortable. Your rheumatology team may review anti-inflammatory medication or other disease control if heel symptoms track with wider inflammation. Supportive shoes and pacing can reduce extra mechanical strain.

Arrange review if heel pain is new, steadily worsening, limits walking, or appears with a broader flare of stiffness and fatigue. Seek prompt assessment for sudden severe pain after injury, inability to bear weight, marked swelling, fever, or a hot, red joint. New weakness, loss of sensation, or bladder or bowel changes require urgent medical attention. Do not change prescribed anti-inflammatory treatment without discussing it with your clinician.

Does the heel pattern suggest enthesis inflammation or another cause? Should my treatment plan be reviewed? Which exercises, footwear changes, or physiotherapy techniques are suitable during a flare? How can I tell a flare from an injury?