Hello, My brother who is 26 years old, is having continuous loose motion for past 1-2 months, however, there is no other symptoms. Although he does have cramps sometimes. There is no odd smell in the stool, and the color of the stool is yellow/normal, and neither he have gas or any other problem. Sometimes the stool gets normal, but its only once or twice in few days or weeks. If he takes loose motion OTC medicine (then it gets fine for a day but again back to loose motion without medicines). Please advise. Thanks.