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.
This is when you're most infectious, although you may still be infectious until your symptoms have gone. In adults and older children, cold symptoms usually last about a week, although a cough may last up to three weeks. Colds tend to last longer in children up to the age of five, typically around 10-14 days.