Ulcerative colitis and constipation

Ulcerative colitis commonly affects the colon and may cause diarrhoea, urgency, bleeding, and abdominal pain. Some people instead pass fewer stools or feel unable to empty fully, particularly when inflammation is concentrated in the rectum. Constipation can also follow changes in eating, drinking, activity, or medicines used for pain or diarrhoea. These symptoms do not prove that colitis is active, and constipation does not by itself identify its cause.

A clinician may ask about stool frequency and consistency, straining, gas, bleeding, recent medicines, and whether you can pass wind. That detail helps distinguish simple constipation from inflammation or blockage.

Keep fluids steady, maintain gentle movement if you feel well, and avoid repeatedly delaying the urge to open your bowels. Increase fibre gradually only if your clinician says it is suitable; extra fibre may worsen bloating or pain during some flares. Do not use stimulant laxatives, enemas, or anti-diarrhoea medicines casually when you have ulcerative colitis. Book a GP Consultation for persistent constipation, new bleeding, or a change from your usual pattern. Ulcerative Colitis, Abdominal Pain, and Diarrhoea provide useful background.

Get urgent help if you have severe or increasing abdominal pain, a swollen abdomen, repeated vomiting, fever, inability to pass stool or wind, heavy rectal bleeding, faintness, or signs of dehydration. Prompt review is also sensible when constipation alternates with frequent loose stools or follows a significant change in your colitis symptoms. Ask whether Colorectal Cancer Screening is appropriate for your longer-term care plan.

Could my medicines or rectal inflammation be contributing? Should I change fibre or use a laxative? Which symptoms would suggest a blockage or flare, and when should my treatment be reviewed?