Diarrhea is an increase in the water content, frequency, and volume of a person's bowel movements. Diarrhea is frequent in people with HIV disease.
Diarrhea can be a serious problem.
Mild cases of diarrhea disappear within a few days. Severe diarrhea, however, can cause serious dehydration or nutritional problems. Bacteria, parasites, fungi, or viruses can cause the infection. Rates of these kinds of diarrhea dropped dramatically when people started using combination antiviral therapy. It can be difficult to find out what is causing diarrhea.