Overview
Ulcerative colitis is a type of inflammatory bowel disease, often called IBD. It causes ongoing inflammation in the inner lining of the large intestine. Symptoms may come and go over time, with flare-ups and quieter periods. The condition can range from mild to severe and may affect daily life.
Key Symptoms
Common symptoms include diarrhea, blood or mucus in the stool, belly pain or cramping, and a strong need to use the toilet quickly. Some people also feel tired, lose weight, or have reduced appetite. In children and teenagers, growth or development may be affected. Symptoms can vary depending on how much of the colon is inflamed.
Causes and Risk Factors
The exact cause is not fully understood. It is thought to involve an abnormal immune response in the digestive tract, along with genetic and environmental factors. Having a family history of inflammatory bowel disease may increase risk. Ulcerative colitis is not caused by stress alone, but stress can make symptoms feel harder to manage.
Who Is Affected
Ulcerative colitis can affect people of any sex, ethnic background, or region. It often begins in adolescence or early adulthood, but it can start at any age. Some people have mild disease, while others have frequent or severe flares. Children can also be affected.
Diagnosis and Tests
A healthcare professional usually diagnoses ulcerative colitis by combining symptoms, medical history, physical examination, and tests. These may include blood tests, stool tests, and a colonoscopy or sigmoidoscopy with tissue samples. Imaging may sometimes be used to look for complications or to help rule out other causes. Because several conditions can cause similar symptoms, proper testing matters.
Treatment Categories
Treatment depends on how severe the disease is and which parts of the colon are affected. Categories may include anti-inflammatory medicines, immune-targeting treatments, symptom support, nutrition support, and surgery in some cases. Ongoing follow-up is important because treatment may need to change over time. A care plan also helps monitor for complications such as anemia, dehydration, and colon-related problems.
Living With It
Living with ulcerative colitis often means learning to recognize flare symptoms and keeping regular medical follow-up. Some people find it helpful to track bowel symptoms, foods, stress, sleep, and medicines so patterns are easier to discuss with a clinician. Fatigue, school or work disruption, and emotional stress are common and deserve attention. Support groups, counseling, or patient organizations may help some people cope.
Diet and Lifestyle
No single diet causes or fixes ulcerative colitis, and triggers can differ from person to person. During flares, some people tolerate simpler foods better, but long-term eating patterns should still aim to meet nutrition needs. Drinking enough fluids can be important, especially if diarrhea is frequent. If eating becomes difficult, weight drops, or certain foods are often avoided, ask a healthcare professional about nutrition support.
When to Seek Medical Care
Seek medical care if you have ongoing diarrhea, blood in the stool, unexplained weight loss, persistent belly pain, fever, or tiredness that does not improve. You should also seek care if symptoms are getting worse, if treatment no longer seems to help, or if a child has poor growth or delayed development. Early assessment can help identify inflammation and reduce the chance of complications.
When It May Be an Emergency
Get urgent medical help if there is heavy rectal bleeding, severe or worsening belly pain, a swollen abdomen, high fever, repeated vomiting, signs of dehydration, confusion, or fainting. Emergency care is also needed if you cannot keep fluids down or if symptoms suddenly become much more severe. Serious complications can happen and should be assessed quickly.