Hi, my 4yr old had constipation a couple of weeks ago and when he finally went was in agony. He is now purposely holding his poo and therefore giving himself constipation agian and again because he is frightened it will hurt, I have tried telling him that if he just went everyday he would be fine but he is insisting on holding it in. It is really making me fret now. Will the doctor prescribe movicol for him? If so will this help?