A.C.
For boys especially, bedwetting at night is very very common. My brother wet until he was 14. My 7 1/2 year old boy still wets as well.
Please get him into a pediatric urologist. They are going to be way more effective in helping than your normal pediatrician. My ped, as awesome as he was in other areas, had no clue when it came to the wetting problems. He put my boy on a medication that actually made the wetting problems worse. I wish I would have gotten in to the pediatric urologist years earlier. Not only did they assure me that tons of children suffer from this problem (hello, they have an entire practice for it!) and they did a VCUG to make sure his bladder was formed correctly. They also helped us immensely with the daytime wetting, which we barely have gotten under control the last 6 months (he still occasionally has an accident, maybe 1x a month). Now, I know there are all sorts of bells and whistles and alarms out there, but be warned... we did the "potty pager" alarm which vibrates when it senses moisture. He was "cured" for a month or so. Then it broke, I had to mail it back, get a replacement, and within weeks he was sleeping right through the alarm. In fact, I posted a question a few months back on Mamapedia as to whether there were other better alarm options to try, you can look back through my questions and perhaps it will give you some insight. Anyway, some people have recommended Chiropractors but we have not tried that. But most people just advised to let him just grow out of it. And so that is the path we are taking. Good luck, I know how frustrating it is! If you need more info feel free to PM me.