Bedwetting, also called enuresis, is a problem both parents and children find annoying. It’s annoying for parents because it’s their responsibility to clean up everything after it has happened. For children it’s annoying because they wake up in a bed soaked with urine, and it happens without them being able to control it. It’s embarrassing, too, for older children who may be invited for a sleepover and have to decline for that reason. It used to be said that wetting the bed can be considered not abnormal up until age 3 years—notice, I said not abnormal, rather than normal. Children will wet the bed occasionally at age three, but it is normal for them to remain dry at night.
By age 5 years, however, if a child is still wetting the bed, it is definitely abnormal and demands evaluation. About 33% of 5-year olds wet the bed. Boys are affected twice as often as girls. It occurs at night so the full name is nocturnal enuresis.
Primary Nocturnal Enuresis is the term when a child has never been dry for six months or
more—80% of all cases.
Secondary Nocturnal Enuresis is the term when a child was dry at night for at least six
months then begins wetting the bed again—triggered by a big life change, eg. moving,
changing schools, birth of a sibling.
Primary Enuresis is the type of bed wetting that warrants an evaluation. Delayed maturation of the communication between the brain and the bladder during sleep is a major cause. The child is a deep sleeper and is unaware when the bladder is full and signaling the need to urinate, or the brain-bladder connection is inadequate to convey that message. Genetics plays a role. If both parents were enuretic, the child has a high likelihood of it as well. Physical abnormalities like a small bladder, chronic constipation (feces presses against the bladder reducing volume), UTI’s, sleep apnea, or Type I diabetes are also causes. More uncommon causes are hormonal excesses which produce too much urine while sleeping. Other developmental conditions of the urogenital tract can cause enuresis, too.
Evaluation should include a thorough history of fluid intake and urinating habits. An ultrasound of bladder, kidneys, and ureters looking for congenital abnormalities is helpful. A urinalysis and post-void residual are important.
Treatment is conservative and non-surgical. First: Bedwetting is not a punishable offense! It is a physical problem like any other that requires steps toward treatment.
Behavioral changes:
Limit oral liquids in the evening
Child should urinate every 2-3 hours during the day to spread urination evenly for the day
Make bathroom time comfortable, not stressful
Empty bladder at child’s bedtime, and again at parents’ bedtime
Bedwetting alarms: they awaken child at the moment wetting begins
Medications:
Hormone at bedtime to reduce nighttime urine production
Anticholinergics to control urinary urge and reduce urination.
Primary Nocturnal Enuresis may take months to get better. This is not a problem that improves in a day or a week; it can take a long time. Success depends upon patience, persistence and consistency of treatment. But it will get better. Again: bed wetting is not a punishable offense. Shaming and embarrassing are pointless and only make the child more embarrassed. In the large majority of cases it is benign and self-limited improving as the child matures physically. It will get better.
References: Morsch N. Bed wetting in children: What Clinicians Should Know. medscape.com 2026 October 22.
