There are likely to be other possible causes, so ask your doctor about your symptoms. 1  Diverticulosis. 2  Ischemic colitis. 3  Inflammatory bowel disease.  Colon 1  cancer. Intestinal worm infestation.  Mesenteric artery 1  ischemia. Proctitis.  Ulcerative colitis.
If you guessed about a week, you are average, but you are wrong. In a new study, doctors who reviewed medical studies found that acute cough, sometimes called acute bronchitis, lasts an average of nearly 18 days.
Most uncomplicated colds last between eight and nine days, but about 25 percent last two weeks, and five to 10 percent last three weeks. Even the most stubborn colds will typically resolve in a few weeks' time; this is actually one of the ways you can distinguish a cold from allergies. A cold will last, at most, a few weeks, but allergy symptoms can last all season.