Crohn’s Disease is a form of inflammatory bowel disease which causes inflammation of the digestive tract. 
Inflammation caused by this disease can involve various sections of the digestive tract which often spread into deeper layers of the bowel. 
Crohn’s disease can be extremely painful and debilitating and sometimes lead to life-threatening complications.
Symptoms include:
* Diarrhea
* Fever
* Fatigue
* Abdominal pain and cramping
* Blood in your stool
* Mouth sores
* Reduced appetite
* Weight loss
* Pain or drainage near or around the anus
* Inflammation of skin, eyes and joints
* Inflammation of the liver or bile ducts
* Kidney stones
* Anemia
There is no cure for Crohn’s Disease, professional medical treatment can help mitigate symptoms that lead to long-term remission. 

Source: https://www.giwebmd.com/blog/2022/4/20/5-common-conditions-of-the-digestive-system