Which terms refer to a group of conditions whose symptoms include chronic diarrhea?

Inflammatory bowel disease.

Explanation:

Diarrhea may be defined as loose and watery stool four or five times a day. This might cause the problem and results in the loss of electrolytes from the body.

Two main types of diarrhea are chronic diarrhea and acute diarrhea. The long term chronic diarrhea can cause inflammatory bowel disease. The main symptoms of this disease is diarrhea, blood stools, abdominal pain and severe cramping.

Thus, the answer is inflammatory bowel disease.