Six Warning Signs of Possible Kidney and Urinary Tract Disease Bed-Wetting Basics Daytime bladder control is achieved much sooner than is nighttime and full bladder control. Boys, in general, take longer to achieve full bladder control. In terms of biology, there is no set age where young children are expected to have full control over their bladders much of the expectation comes from parents and peers. Conditions such as constipation, diabetes and bladder infections can contribute to nighttime wettings.
Nighttime wetting can be a sign of an allergic reaction to certain food items.