Our youngest son (9) has been dealing with bed time accidents since he was potty trained at 2/3 years old. It can be difficult, there are times when he does not have a problem for weeks and then all of a sudden it is nightly for weeks. Personally I think it has to do with growth spurts. And I also believe he has a very small bladder. I have to get up at night to go too. My husband teases me about having little bladder syndrome because every where we go I have to find a bathroom. I have no health issues, just a small bladder, so I can't be upset that I passed it down to my child!
We do all the standard things recommended: no big drinks for at least an hour or so before bed, go potty several times before going to sleep, waking him up at night, (I am not a great sleeper anyway) but we also realized with getting him up, that it has to be between 2:00 a.m. and 3:00 a.m or he still has an accident, regardles of what time he goes to bed or gets out of bed! He uses night time pants to cut down on the laundry, (but he is a big kid and they are getting too small on him!). We talk about listening to his body and responding but it has never made a difference.
We try to be supportive and not make a big deal out of any of it but he is still quite sensitive. We have to tell him we are not upset with him. It is very important for you and he to both know it is not an issue of his control. This is not an issue to be embarrassed about, (you or your child) it is simply one of those things that some kids deal with, and probably more than you would think!!
When we questioned our family doc a few years ago, after he checked out health wise, and absolutely do make sure that it is not a health issue! If this is not something that has been a previous problem, sudden night time accidents can be the first sign of childhood diabetes or uti's! But also, please be careful about tests that they may want to perform on small children with these issues, we had a friend who's son had all kinds of tests that were very invasive and it ended up being just plain old night time accidents! Anyway, I was relieved but also a little surprized, when she told us not to be concerned. She said it is VERY common especially when there is a family history. I had a brother who dealt with it and his father also dealt with it. She told us that most kids grow out of it on thier own by age 10-11.
But that being said the older he gets the more it becomes a problem for him, he wants to go spend nights at friends houses but doesn't, do to the fear of having an accident.
We have an appointment with a new family doc (we moved here last year) next month to discuss options. Medication have been suggested and I have looked into the alarms but they are about $100.00.
I guess I haven't really given you any advice, just know you are not alone. And neither is your son!! By the way, at least two of my sons friends who have come over and spent the night here, (accidently heard his night time pants rustle) and informed him, "don't be embarrassed, I had the same problem!" Although many kids can be cruel, some kids like these boys not only weren't cruel but were kind enough to share thier own struggles with it!