If an eleven-year-old child still wets the bed, it is generally considered that there may be enuresis. Enuresis is mainly caused by the underdevelopment of the cerebral cortex or some psychosomatic factors. If a child has enuresis, active treatment is usually required, which includes behavioral treatment and medication. Behavioral treatment requires proper bladder function training, which means that the patient should practice holding urine. Parents should also keep track of their child’s urination pattern and wake him/her up at night, half an hour before he/she wakes up to urinate. In addition, medications such as synthetic antidiuretic hormones and M-receptor antagonists such as tolterodine can also be used to reduce symptoms.