Please help with advice/support. My almost 4.5 year old has been withholding his poo for 6 weeks. I know this is really common and I've read lots of threads on here about it happening during potty training but the advice tends to relate to younger children who haven't already been successfully toilet trained for a couple of years.
My DS had a fissure which was started the problem about 6 weeks ago. He refuses entirely to sit on the toilet and can go for up to 4/5 days without going. This led to a vicious circle of withholding, then hardened stools that were painful to pass which then reopened the fissure. After using lacotulose we have been prescribed Movicol instead and told by the Dr that the fissure is completely healed. Movicol has resulted in lots of soiled pants (4 pairs already this morning) where he clearly can't hold onto the whole thing and is letting go of a bit at a time(!) I've tried postitive reinforcement with star charts and bribery and read Anthony Cohn's book which is very reassuring however, but I'm still at a loss as to next steps.
After much upset from both of us, I've taken a different tack and DS is now wearing a pullup as I can't face any more soiled pants and I've told him we can't see his friends this afternoon. I had hoped this might work as an incentive but whilst he's upset about both 'punishments' it just doesn't seem to be enough to convince back onto the loo. I feel awful taking a hardline during what is clearly a traumatic time for him but I'm at my wits end.
Our whole family is being affected as DS can be irritable at best and violent at worst when he needs to 'go'. My DS is starting school in September and I'm desperate to support him and sort it out before then. Has anyone else been through this with a child of similar age?