Yes! We went through it and had we not found a specialist when my daughter was 5, we'd probably still be dealing with it. Our regular Pediatrician missed this diagnosis on many many appt's. Children's hospital didn't even "go there" when I brought it up on an emergency visit when my poor daughter hadn't had a real bowel movement in 18 days - they just treated our symptom, did an enema (which produced no bowel movement) and sent us on our way. Long story short, I called my daughters school the next morning and said we were taking a few weeks off to try to get her figured out. I thought maybe just being at home would encourage a bm. Well, I got so lucky that morning! The admin. woman that answered the phone had heard of this, knew of another student that was going through it, called that Mom and got me the number to the dr. she was going to. We called they took us right away, knew exactly what was going on (Encropresis). The Dr. put us on a 5 day aggressive clean out and I'd say about 6/7 days from that appointment my daughter was making normal/regular bowel movements. That was nearly 2 years ago! Now, you HAVE to stay on top of it, especially if it's been going on a while. It takes quite some time for the colon to shrink back to its normal size and even then one or two days backed up and it will stretch out. So I'm sure the dr. will recommend Miralax for maintenance issues - don't miss a dose. Make sure he takes it daily. Also, a healthy diet with lots of water will keep him on track - once he's been cleaned out and all. No amount of fiber will clean him out if he has been this way for awhile. He will probably need the same treatment my daughter did. If his Ped. only suggests a diet high in fiber, water - you know the usual, PLEASE ask for a referral to a specialist!
By the way, I just read through the responses you received thus far. Please don't do anything w/out talking to your Dr. or specialist - notice I didn't tell you how my daughter was cleaned out - I don't know if your son has the same thing and I don't want you to do anything too drastic unless the dr. recommends it. But I did want to say, no over the counter laxatives. Miralax is a non habit forming laxative - anything else, you really don't want to be giving. The process here is to first see if he is full of stool (xray), second, get him cleaned out, once cleaned out he needs to get in the routine of using the bathroom everyday at the same time - usually 15/20 min after a meal (breakfast is a good time) however some kids prefer to poop in the evening. Either way, to help him go daily he'll most likely be put on a non habit forming laxative like Miralax and then you need to make sure that he has that bathroom time everyday where he isn't rushed and make sure he is eating right.. try to steer clear of fast food, processed food, etc.. A well rounded diet with lean meats, veggies, fruits, nuts, seeds and healthy fats is the way to go.
Feel free to email me if you have any specific questions.
Best wishes,
M.