It is important that you take your child to see his pediatrician to help you with this. The first step is for him to be examined, to make sure there is no sign of a physical problem. The next step is to clean out all the stool that he has backed up inside. This is usually done with stool softeners, lubricants like mineral oil, or laxatives, over a one or two week period. Your physician can prescribe them if necessary. Often, a child will continue to take mineral oil after the stool is cleaned out, to keep the stool soft, and prevent the problem from recurring. The other important step is to have your son sit on the toilet for at least ten minutes, twice a day, every day, usually after breakfast and after dinner, even if he does not feel like he has to go. This is to help him empty his bowel completely on a regular basis. You may need to give him some incentive to make sure he sits for the full ten minutes (like a sticker reward chart, or having a story read to him while he's sitting). With the proper encouragement, and avoidance of punishment, most children will respond quite well to this type of approach.
Bowel Control Problems in Six-Year-Old
Pediatrics Expert Advice from Shari Nethersole, M.D.