How effective is hydrotherapy for ankylosing spondylitis?

Warm water can reduce the load on joints while buoyancy supports your body. That combination may make gentle spinal, hip, and shoulder movements more comfortable than the same exercises on land. Hydrotherapy can help practise posture, breathing, mobility, and strength, but it does not remove the inflammation or change the underlying course of ankylosing spondylitis.

A physiotherapist can adapt depth, temperature, pace, and exercises to your stiffness, fatigue, balance, and spinal mobility. More information about the condition is available in [Ankylosing Spondylitis](/conditions/ankylosing-spondylitis/).

Begin with an assessment so the programme matches your current movement and flare pattern. Sessions may include gentle spinal extension, rotation within comfort, hip mobility, walking through water, and controlled strengthening. Move steadily, avoid forcing a painful range, and allow recovery if fatigue increases later that day.

Tell the therapist about skin wounds, bowel or bladder changes, dizziness, heart or breathing problems, and recent eye inflammation. Continue prescribed medicines and land-based exercises unless your clinical team changes the plan. See [Hydrotherapy](/treatments/physiotherapy-and-rehabilitation/hydrotherapy/) for how sessions are structured.

Pause exercise and contact your clinician if a session causes persistent worsening pain, unusual weakness, marked dizziness, or breathing difficulty. Seek urgent medical assessment for new loss of bladder or bowel control, numbness around the saddle area, or sudden severe spinal pain after injury.

Ask whether your current symptoms are suitable for pool exercise, which movements to avoid during a flare, how to balance hydrotherapy with medicines, and how progress in mobility or daily function will be measured.