Overview
Crohn's disease is a chronic inflammatory condition of the gastrointestinal tract. It can affect any part of the GI tract, from the mouth to the anus, but most commonly affects the end of the small intestine (ileum) and the beginning of the large intestine (colon).
The inflammation caused by Crohn's disease can spread deep into the affected tissues and may occur in patches alongside healthy tissue. It is a lifelong condition that can flare up periodically, and while there is no cure, many treatments are available to manage symptoms and promote remission.
Symptoms
Symptoms include severe diarrhea, abdominal pain, fatigue, weight loss, and blood in the stool. Some people may also experience fever and joint pain.
Other common symptoms include:
- Loss of appetite
- Mouth sores
- Pain or drainage around the anus (perianal pain)
- Reduced ability to absorb nutrients from food
- Delayed growth or sexual development (in children)
Causes
The exact cause is unknown, but it involves a combination of genetics, immune system dysfunction, and environmental factors.
Research suggests that an abnormal immune response to gut bacteria in genetically susceptible individuals may trigger the chronic inflammation seen in Crohn's disease. Environmental factors such as smoking, diet, stress, and certain infections may also play a role in flare-ups.
Treatment
Treatment aims to reduce inflammation and symptoms. It includes medications (anti-inflammatory, immunosuppressants, biologics), diet, and surgery in severe cases.
Treatment options typically include:
- Anti-inflammatory medications such as aminosalicylates
- Immunosuppressants to reduce immune system activity
- Biologic therapies targeting specific inflammatory pathways
- Nutritional therapy and dietary changes
- Surgery to remove damaged portions of the bowel when necessary
When to See a Doctor
See a doctor if you have persistent diarrhea, abdominal pain, or blood in your stool.
You should also seek medical attention if you experience unexplained weight loss, fever lasting more than a few days, or any symptoms that significantly interfere with daily life. Early diagnosis and treatment can help prevent complications and improve long-term outcomes.