Most boys stop wetting the bed between ages 5 and 7, but the timeline varies widely. About one in three 5-year-old boys still wets the bed, and roughly one in five is still doing so at age 8. By age 11, the number drops to about 7%, and by 17, fewer than 1% of boys are still affected. If your son is still having nighttime accidents, he’s almost certainly on a normal developmental path, just a slower one.
Boys are more than twice as likely as girls to wet the bed. In a large study of children between 8 and 11, 6.2% of boys were still wetting compared to 2.5% of girls. Boys also tend to have more frequent wet nights. The reasons aren’t entirely clear, but the gap narrows steadily with age.
Why Some Boys Take Longer
Bedwetting isn’t a behavioral problem or a sign of laziness. It’s driven by three overlapping physical factors: how much urine the body produces at night, how well the bladder manages that volume, and whether the brain wakes the child up when the bladder is full.
In some children, the body doesn’t yet produce enough of a hormone that slows urine production during sleep. That means the bladder fills faster overnight than it can hold. In others, the bladder itself is overactive, contracting before it’s truly full. But the factor parents notice most is sleep depth. Children who wet the bed have exceptionally high arousal thresholds, meaning their brains simply don’t register the signal from a full bladder strongly enough to wake them. Researchers have described bedwetting not just as a bladder issue but as a disorder of sleep itself.
These systems mature at different rates in different kids. For most boys, everything clicks into place on its own by the early school years. For a smaller group, it takes until the preteen years or occasionally longer.
One Overlooked Cause: Constipation
Chronic constipation is surprisingly common in children who wet the bed, and many parents don’t connect the two. In a child’s small pelvis, a rectum packed with stool physically compresses the bladder. This reduces the bladder’s capacity and can trigger involuntary contractions. Treating the constipation alone sometimes reduces or eliminates bedwetting, so it’s worth considering if your child has irregular or difficult bowel movements.
Primary vs. Secondary Bedwetting
If your son has never been consistently dry at night, that’s called primary bedwetting. It’s the most common type and is almost always developmental. The child’s body simply hasn’t caught up yet.
Secondary bedwetting is different. This is when a child who has been dry for six months or more starts wetting again. It can be triggered by stress, a change in routine, a urinary tract infection, or other medical issues. Secondary bedwetting deserves a closer look, especially if it comes with pain during urination, cloudy or bloody urine, fever, daytime accidents, or a noticeably weak urine stream.
What Actually Helps
Before age 6 or 7, most pediatricians recommend simply waiting. The odds are strongly in favor of the problem resolving on its own. For older children who are bothered by it, or for situations like sleepovers and camp, there are two main approaches.
Bedwetting Alarms
A moisture-sensing alarm clips to your child’s underwear or a pad on the bed and sounds when wetting begins. The goal is to train the brain to wake up before the bladder releases. It requires patience: most families need 10 to 14 weeks of consistent use. In studies, about two-thirds of children using an alarm achieved 14 consecutive dry nights, and some newer devices report success rates closer to 85%. The advantage of alarms is that they address the underlying arousal problem, so the results tend to stick.
Medication
A synthetic version of the hormone that reduces nighttime urine production is available by prescription. About 78% of children respond within three months. The catch is relapse: roughly half of children start wetting again once the medication stops, and some studies put the long-term relapse rate much higher. This makes it better suited as a short-term tool for specific situations (a week at camp, for example) rather than a permanent fix.
What You Can Do at Home
Limiting fluids in the two hours before bedtime and making sure your child uses the bathroom right before sleep can reduce the volume the bladder has to handle overnight. A waterproof mattress cover takes the stress out of cleanup and lets everyone go back to sleep faster. If constipation is a factor, increasing fiber and water intake during the day can make a real difference.
The most important thing is to avoid punishment or shame. Your child isn’t choosing to wet the bed. He’s sleeping through a signal his brain isn’t mature enough to process yet. Children who feel embarrassed about bedwetting are more likely to develop anxiety around sleep, which doesn’t help the problem. Reassurance that his body will catch up, and that millions of other kids are going through the same thing, goes a long way.