IBS=Irritable bowel syndrome/ chronic constipation
. Try having regular food habit. High fiber in the diet. and time spent in the toilet. You may also try Tab. Mebeverine
135mg 1-2 tablet daily orally for a month.(Colospa tablet) and Lactulose
20ml bd daily. if it dies not, try relaxation technique and high fiber diet as mentioned earlier. You may also try minor tranquillizer for a week or two and couselling on any conflicts.