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Ulcerative colitis is an autoimmune disease characterized by T-cells infiltrating the colon. [43] No direct causes for UC are known, but factors such as genetics, environment, and an overactive immune system play a role. [1] UC is associated with comorbidities that produce symptoms in many areas of the body outside the digestive system.
Colorectal surgery. Solitary rectal ulcer syndrome or SRUS is a chronic disorder of the rectal mucosa (the lining of the rectum). [ 1 ] It commonly occurs with varying degrees of rectal prolapse. The condition is thought to be caused by different factors, such as long term constipation, straining during defecation, and dyssynergic defecation.
Intestinal infection: diloxanide furoate, iodoquinoline [2] Frequency. ~480 million [2] Amoebiasis, or amoebic dysentery, is an infection of the intestines caused by a parasitic amoeba Entamoeba histolytica. [3][4] Amoebiasis can be present with no, mild, or severe symptoms. [2] Symptoms may include lethargy, loss of weight, colonic ulcerations ...
Gastrointestinal perforation, also known as gastrointestinal rupture, [1] is a hole in the wall of the gastrointestinal tract. The gastrointestinal tract is composed of hollow digestive organs leading from the mouth to the anus. [3] Symptoms of gastrointestinal perforation commonly include severe abdominal pain, nausea, and vomiting. [2]
Presentations may resemble dermatitis or decubitus ulcers in debilitated, bedridden patients. A secondary bacterial infection may be present. Syphilis (syphilitic proctitis) The symptoms are similar to other causes of infectious proctitis; rectal pain, discharge, and spasms during bowel movements, but some people may have no symptoms. Syphilis ...
CMV colitis may be clinically manifested with diarrhea (usually non-bloody), abdominal pain, weight loss and anorexia. The diagnosis of CMV colitis is based on serology, CMV antigen testing and colonoscopy with biopsy. Clinical suspicion should be aroused in the setting of immunocompromised patient but it is much rarer in immunocompetent patient.
Melena is a form of blood in stool which refers to the dark black, tarry feces that are commonly associated with upper gastrointestinal bleeding. [ 1 ] The black color and characteristic strong odor are caused by hemoglobin in the blood being altered by digestive enzymes and intestinal bacteria. [ 2 ] Iron supplements may cause a grayish-black ...
Gastroenterology. Collagenous colitis is an inflammatory condition of the colon. Together with the related condition lymphocytic colitis, it is a subtype of microscopic colitis, which is characterized by inflammation that specifically affects the colon (i.e. colitis), and a clinical presentation that involves watery diarrhea but a lack of ...