Overview

Crohn's disease is a long-lasting inflammatory disease that belongs to a group of inflammatory bowel diseases. It can affect any part of the digestive tract, from the mouth to the anus, but most commonly involves the end of the small intestine and the beginning of the large intestine. The inflammation extends deep into the intestinal wall, making it hard for the body to digest food and absorb nutrients. There are high chances of relapses in Crohn’s disease with periods of flare-ups and periods of no symptoms. It can happen at any age, but it usually starts in the teen or early adult years. Getting a diagnosis early can help lower the risk of complications and improve long-term control.

Symptoms
Some common symptoms are diarrhea that won't go away, stomach pain, cramps, and tiredness. During flare-ups, people may lose weight, have a reduced appetite, and develop a fever. Blood or mucus in the stool may occur. Some people get sores in their mouths, joint pain, or skin problems. Crohn's disease can cause kids to grow slowly and not get enough nutrients.

Causes
The precise aetiology of Crohn's disease remains unidentified. People think it happens because the immune system mistakenly attacks the digestive tract. Genetic predisposition, environmental factors, and alterations in gut microbiota may play a role. It is well known that smoking can make diseases worse and cause more flare-ups.

Diagnosis
Diagnosis involves medical history, physical examination, and laboratory tests to detect inflammation or anaemia. Stool tests help rule out infections. A colonoscopy with biopsy is an important test to confirm intestinal inflammation. CT or MRI scans may be used to see how far the disease has spread and what problems it has caused.

Treatment
The goal of treatment is to reduce inflammation, control symptoms, and prevent the disease from returning. Anti-inflammatory drugs, immunomodulating agents, and biologic therapies are among the medicines that may be used. Regular checkups can help stop relapses.
Crohn's disease is a condition that lasts for life and has times when it gets worse and times when it gets better. Many people stay active after receiving the right treatment and follow-up. Early management reduces the risk of complications and improves long-term outcomes.