How does Diarrhea develop?

With diarrhea, stools are generally more flexible or not increased stool frequency. This relaxation of the stool - that can vary up to the end of a little soft for liquids - water is caused by the increase in the stool. During normal digestion, food is kept liquid by the secretion of large amounts of water through the stomach, upper small intestine the pancreas and gallbladder. Undigested food reaching the small intestine and colon in liquid form. The bottom of the small intestine and the colon absorbs all the water, turn the undigested food in stool, more or less solid. The more water in the stool may occur if the stomach and / or small intestine secretes too much fluid, distal small intestine and colon do not absorb enough water, or undigested, liquid food passes too quickly through the small intestine and colon In order to remove enough water. Of course, more than one of these abnormal processes may occur simultaneously.

For example, some viruses, bacteria and parasites cause increased secretion of fluid, either by invading and inflaming the lining of the small intestine (inflammation stimulates the lining to secrete water) or produce toxins (produced chemical) that stimulates the lining to secrete fluid, but without causing inflammation. Inflammation of the small intestine and / or colon of bacteria or ileitis or colitis can increase the speed with which food passes into the intestine, reducing the time available to absorb water. Conditions such as colitis collagen colon can block the colon's ability to absorb water.

Diarrhea is usually divided into two types, acute and chronic.

Acute diarrhea lasts for a couple of days, even weeks.

Chronic diarrhea can be defined in several ways, but almost always lasts longer than three weeks.

It is important to distinguish between acute and chronic diarrhea, as they often have different causes, require different diagnostic tests, and require different treatment.

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