26/01/2026
Crohn's Disease
Crohn's disease is a type of inflammatory bowel disease (IBD) that may affect any segment of the gastrointestinal tract.[3] Symptoms often include abdominal pain, diarrhea, fever, abdominal distension, and weight loss.[1][3] Complications outside of the gastrointestinal tract may include anemia, skin rashes, arthritis, inflammation of the eye, and fatigue.[1] The skin rashes may be due to infections, as well as pyoderma gangrenosum or erythema nodosum.[1] Bowel obstruction may occur as a complication of chronic inflammation, and those with the disease are at much greater risk of colorectal cancer and small bowel cancer.[1]
Although the precise causes of Crohn's disease (CD) are unknown, it is believed to be caused by a combination of environmental, immune, and bacterial factors in genetically susceptible individuals.[3][13][14][15] It results in a chronic inflammatory disorder, in which the body's immune system defends the gastrointestinal tract, possibly targeting microbial antigens.[14][16] Although Crohn's is an immune-related disease, it does not seem to be an autoimmune disease (the immune system is not triggered by the body itself).[17] The exact underlying immune problem is not clear; however, it may be an immunodeficiency state.[16][18][19]
About half of the overall risk is related to genetics, with more than 70 genes involved.[1][20] To***co smokers are three times as likely to develop Crohn's disease as non-smokers.[6] Crohn's disease is often triggered after a gastroenteritis episode.[1] Other conditions with similar symptoms include irritable bowel syndrome and Behçet's disease.[1]
Read more .... https://en.wikipedia.org/wiki/Crohn%27s_disease