IBS- Irritable Bowel Syndrome
is a recurrent problem. You have to get ruled out the allergic factor too.
and black stool
called malena can be due to bleeding in the intestinal tract. You have to get your stool for routine, microscopy, occult blood and for worms. Weight loss
can be due to IBS it self. One of the root causes of IBS is stress and anxiety.
You are having a constipating form of IBS. Watch for the foods, activities causing stress all have to be avoided.