Ulcerative Colitis: Symptoms, Causes & Treatment

Ulcerative colitis (UC) is a chronic inflammatory bowel disease affecting the colon and rectum. It results from an autoimmune dysfunction where the immune system attacks the healthy lining of the colon, causing persistent inflammation and superficial ulcers. The inflammation typically begins in the rectum and may gradually extend upward to involve the entire colon.

This condition affects millions of people worldwide and occurs across all age groups, though it is more common in adults aged 15–35 and those over 60. In the Middle East and Jordan, there is a gradual increase in UC prevalence, attributed to changing lifestyles and dietary patterns. The disease requires continuous medical monitoring as untreated cases may lead to serious complications.

Unlike Crohn's disease, ulcerative colitis is limited to the colon and does not affect the deeper layers of the intestinal wall. Classified as an inflammatory bowel disease (IBD), UC is a lifelong condition requiring long-term treatment and effective symptom management.

Symptoms of ulcerative colitis vary from person to person depending on the severity and location of inflammation in the colon. Symptoms may develop gradually over weeks or months. During acute flares, symptoms are more severe, while in remission periods they may be mild or absent. Women may experience symptom exacerbation during menstrual cycles.

• Persistent bloody diarrhea: One of the most common symptoms, often accompanied by mucus or pus.
• Abdominal pain and cramping: Especially in the lower left abdomen, often worsening before bowel movements.
• Urgent and frequent bowel movements: Patients may need to use the bathroom 6–20 times daily in severe cases.
• Unintentional weight loss: Resulting from malabsorption and chronic inflammation.
• Fatigue and exhaustion: Due to blood loss, nutrient loss, and poor nutrition.
• Fever: May occur during acute disease flares.
• Anemia: Resulting from chronic blood loss through the colon.
• Extraintestinal symptoms: Joint inflammation, eye discomfort, skin rash, and mouth ulcers.
• Malnutrition: Poor absorption of vitamins and minerals.
• Rectal discomfort: Sensitivity and pain in the anal region.
• Bloating and gas: Due to dysbiosis in the gut.

• Autoimmune dysfunction: The immune system fails to distinguish between beneficial and harmful bacteria, attacking healthy colon cells by mistake.
• Genetic factors: A family history of ulcerative colitis significantly increases the risk of developing the disease.
• Bacterial and viral infections: Previous infections may trigger an abnormal immune response that persists even after recovery.
• Modern lifestyle: Psychological stress and chronic stress can activate or worsen symptoms in susceptible individuals.
• Poor nutrition: Excessive consumption of fatty and processed foods, combined with low fiber intake, may increase inflammation.
• Medication use: Certain medications, particularly antibiotics, can disrupt the natural balance of gut bacteria.
• Environmental factors: Environmental pollution and geographic factors may play a role in disease activation.

• Age: The disease is more common in people aged 15–35 and over 60.
• Family history: Having first-degree relatives with IBD significantly increases risk.
• Race and ethnicity: People of European descent are at higher risk than other ethnic groups.
• Secondhand smoke exposure: Continuous tobacco smoke exposure may increase disease risk.
• Psychological stress: Chronic emotional and psychological stress increases symptom flares.
• Immunosuppressive medications: Certain medications may alter immune system response to the colon.
• High-fat, high-sugar diet: This dietary pattern promotes inflammation and dysbiosis.
• Other autoimmune diseases: Presence of other autoimmune conditions increases UC risk.
• Nonsteroidal anti-inflammatory drugs: Some pain relievers may exacerbate colon inflammation.
• Prior intestinal infections: Severe past gastrointestinal infections may increase susceptibility.

Diagnosis of ulcerative colitis is based on a combination of clinical evaluation, laboratory tests, and imaging studies. The physician begins with a complete medical history and physical examination, then proceeds to confirmatory tests. Early and accurate diagnosis is crucial for timely treatment initiation and complication prevention.

• Clinical examination: Includes abdominal examination and vital signs assessment to evaluate the patient's general condition.
• Stool analysis: Checks for occult blood, signs of infection, or dysbiosis.
• Blood tests: Include complete blood count (CBC), liver and kidney function tests, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP). Elevated CRP (above 10 mg/L) indicates active inflammation.
• Colonoscopy: The gold standard for diagnosis, allowing direct visualization of the colon lining and tissue sampling for histological examination.
• Magnetic resonance imaging (MRI) or computed tomography (CT): To assess the extent of inflammation and identify potential complications.
• Histological examination (Biopsy): Colon lining samples obtained during colonoscopy to confirm diagnosis.
• Fecal calprotectin test: A sensitive marker of intestinal inflammation; normal value is less than 50 μg/g feces.

Medications

• 5-Aminosalicylic acid (5-ASA) derivatives: Such as mesalamine and sulfasalazine, reduce colonic inflammation. Used for mild to moderate disease and maintenance between flares. May be topical (enemas) or oral.
• Corticosteroids: Such as prednisone, used for acute flares to rapidly reduce inflammation. Not used long-term due to side effects.
• Biologic therapies: Such as infliximab and adalimumab (TNF inhibitors), selectively suppress the immune system. Highly effective in moderate to severe disease and steroid-resistant patients.
• Immunosuppressive agents: Such as azathioprine and mercaptopurine, reduce corticosteroid dependence and maintain remission.
• JAK inhibitors (Janus Kinase): Novel agents like tofacitinib inhibit specific immune pathways. Good option for biologic-refractory patients.
• Antibiotics: Used when bacterial infection is suspected or inflammatory complications occur.
• Iron and vitamin supplementation: To compensate for nutrient deficiencies from malabsorption.

Procedures and Surgery

• Proctocolectomy (colon and rectal resection): The only surgical option that permanently cures the disease. Reserved for severe cases refractory to medical therapy or serious complications such as cancer or perforation.
• Colostomy: May be necessary if complete resection is not possible.
• Topical steroid therapy: Suppositories or enemas for inflammation localized to the rectum and sigmoid colon.

Lifestyle Modifications

• Specialized diet: Avoid trigger foods (spicy, fatty, high rough fiber). Increase easily digestible and nutritious foods. Food journaling is very helpful.
• Adequate fluid intake: Especially water and natural juices without added sugars, to compensate for diarrheal losses.
• Stress management: Relaxation techniques such as yoga, meditation, and psychotherapy may reduce disease flares.
• Regular moderate exercise: Consistent physical activity improves overall health and reduces stress, but intense exercise should be avoided during acute flares.
• Smoking cessation: Smoking worsens the disease and reduces treatment efficacy.
• Regular sleep schedule: Sleep deprivation increases inflammation and stress; aim for 7–9 hours daily.
• Meal frequency: Small, frequent meals are easier on the digestive system than large meals.
• Regular medical follow-up: Periodic physician visits to assess treatment efficacy and adjust as needed.

• Severe bleeding and acute anemia: May require blood transfusion and urgent medical intervention. Affects vital bodily functions and causes severe weakness.
• Toxic megacolon (colon perforation): Dangerous acute colonic dilatation that may lead to perforation, causing widespread infection (sepsis) that can be life-threatening if not treated urgently.
• Colorectal cancer: Patients with long-standing ulcerative colitis (more than 8–10 years) have increased risk of colorectal cancer.
• Thrombosis (blood clots): Chronic disease increases risk of venous and arterial thrombosis, potentially causing stroke or pulmonary embolism.
• Severe dehydration and electrolyte imbalance: Persistent diarrhea causes loss of vital fluids and salts, affecting heart rhythm and nerve function.
• Severe extraintestinal manifestations: Patient may suffer acute joint inflammation or severe skin and eye inflammation that can cause blindness.
• Malnutrition and nutritional deficiency: Chronic malabsorption causes dangerous deficiencies in protein, vitamins, and minerals, affecting immunity and growth, especially in children.
• Osteoporosis: Results from poor calcium absorption and long-term corticosteroid use.

• Maintain a healthy, balanced diet: Eat fresh fruits, vegetables, whole grains, and lean proteins. Avoid processed, fatty, and spicy foods that may increase inflammation.
• Manage stress effectively: Practice relaxation techniques such as meditation, yoga, and deep breathing. Seek psychological support when needed.
• Avoid smoking and alcohol: Smoking increases disease risk and worsens its course. Alcohol also irritates the intestines.
• Exercise regularly: Moderate physical activity such as daily walking or swimming improves overall health and reduces stress.
• Get adequate and regular sleep: Sleep deprivation weakens immunity and increases inflammation. Aim for 7–9 hours of daily sleep.
• Avoid unnecessary medications: Some drugs such as antibiotics and analgesics may increase disease risk. Consult your physician before taking new medications.
• Maintain food and water safety: Consuming clean, safe food and drinking clean water may reduce infection risk, which may trigger the disease.
• Regular medical follow-up: Especially for those with a family history of the disease; periodic screening may aid early diagnosis.