The main symptoms of Crohn's disease include:
- Belly pain. The pain often is described as cramping and intermittent, and the belly may be sore when touched. Belly pain may turn to a dull, constant ache as the condition gets worse.
- Diarrhea. Some people may have diarrhea 10 to 20 times a day. They may wake up at night and need to go to the bathroom. Crohn's disease may cause blood in stools, but not always.
- Loss of appetite.
- Fever. In severe cases, fever or other symptoms that affect the entire body may develop. A high fever may mean that you have an infection, such as an abscess.
- Weight loss. Ongoing symptoms, such as diarrhea, can lead to weight loss.
- Too few red blood cells (anemia). Some people with Crohn's disease develop anemia because of low iron levels caused by bloody stools or the intestinal inflammation itself.
- Small tears in the anus (anal fissures) that may go away, but come back again.