Ankylosing spondylitis and Crohn’s disease

One mainly affects the axial skeleton, while the other causes inflammation in the digestive tract. Their symptoms and medicines can influence each other, so the rheumatology and gastroenterology teams should know the full treatment plan.

Ankylosing spondylitis can present with inflammatory back or buttock pain, stiffness after rest, reduced spinal movement, or pain at tendon attachments. Crohn’s disease can present with persistent diarrhoea, abdominal pain, urgency, reduced appetite, weight loss, fatigue, or blood in the stool. Either condition may have periods of more active and quieter symptoms.

Bowel symptoms do not prove Crohn’s disease, and back pain does not by itself establish ankylosing spondylitis. Clinicians assess the pattern, examination findings, blood and stool tests, imaging, and sometimes bowel inspection. Treatment choice may be coordinated because some medicines can address inflammation in both areas, while others may be unsuitable when bowel disease is active.

Tell each specialist about all prescribed, over-the-counter, and injected medicines. Do not add an anti-inflammatory pain medicine without checking with the treating team, because it may aggravate digestive symptoms in some people. Report changes in bowel habits when discussing a new musculoskeletal treatment.

Continue suitable mobility and strengthening activity, adjusting intensity during a bowel flare, marked fatigue, dehydration, or joint flare. A physiotherapist can modify exercise around pain and energy levels. Keep a brief record of spinal stiffness, joint symptoms, bowel changes, fever, appetite, and treatment timing to help clinicians see whether symptoms move together.

Seek urgent medical care for severe or worsening abdominal pain, repeated vomiting, a swollen abdomen, inability to pass stool or gas, heavy rectal bleeding, black stool, fainting, or signs of marked dehydration. Fever with severe abdominal symptoms also needs prompt assessment.

Emergency assessment is needed for new limb weakness, numbness around the groin, loss of bladder or bowel control that seems neurological, or severe spinal pain after injury. Contact your usual team soon for persistent diarrhoea, blood in stool, unexplained weight loss, steadily worsening back stiffness, or a hot swollen joint.

Ask whether the current symptoms appear to come from the spine, bowel, medicine effects, or another cause; which treatments cover both conditions; and which pain medicines to avoid. Clarify who should be contacted during a flare and how exercise, hydration, and nutrition should be adjusted when digestive symptoms are active.