Noninfective enteritis and colitis

Gastroenteritis, also known as infectious diarrhea, is an inflammation of the gastrointestinal tract including the stomach and intestine. Symptoms may include diarrhea, vomiting, and abdominal pain. Fever, lack of energy, and dehydration may also occur. This typically lasts less than two weeks. Although it is not related to influenza, in Canada and the United States it is often referred to as "stomach flu".

type of inflammatory bowel disease

inflammatory bowel disease that causes ulcers in the colon

Colitis is swelling or inflammation of the large intestine (colon). Colitis may be acute and self-limited or long-term. It broadly fits into the category of digestive diseases.

Ileitis is an inflammation of the ileum, a portion of the small intestine. Mycobacterium tuberculosis infection may mimic Crohn's disease Ileitis. Ileitis may be linked to a broad range of illnesses, such as sarcoidosis, amyloidosis, ischemia, neoplasms, spondyloarthropathies, vasculitides, drug-related conditions, and eosinophilic enteritis.`

Ozanimod, sold under the brand name Zeposia, is an immunomodulatory medication for the treatment of relapsing multiple sclerosis and ulcerative colitis. It acts as a sphingosine-1-phosphate receptor (S1PR) agonist, sequestering lymphocytes to peripheral lymphoid organs and away from their sites of chronic inflammation.