If an adult suddenly starts wetting the bed, it may be a symptom of an abnormal disease originating in the head. Additionally, overexertion and excessive stress may also be contributing factors. It is recommended to undergo a head CT scan and pay attention to staying warm. Practicing pelvic floor exercises can be beneficial. During urination, deliberately stop a few times and rinse thoroughly. This can help strengthen bladder control and reduce the risk of bedwetting. If these methods do not resolve the issue, it is advisable to consult a professional doctor for more detailed diagnosis and treatment recommendations.