My 8 year old son keeps having problems with liquid feces leaking out in his underwear with out feeling it until it is to late. It's happening so much he is raw. This happened once before due to him having his appendix removed but that was almost a year ago. So what could be causing it now? Should I take him to a doctor immediately or is this something that can be handled at home. Not sure how to help him. Thanks for your time!