Causes of bedwetting: First, neurological lesions that cause incomplete closure of the sphincter, such as brain hemorrhage, cerebral infarction or spinal cord injury, and other diseases that cause the sphincter to fail to close completely. This is when the state of urinary incontinence occurs and manifests itself as bedwetting. Secondly, if there is a male with severe prostate enlargement, there can be filling incontinence that manifests itself as bedwetting. This is because the prostate enlargement obstructs the urethra and a large amount of urine cannot be discharged from the bladder, which can naturally overflow when it fills up to a certain amount and manifests as bedwetting. If you are a woman who has given birth many times or an older woman who has a relaxed pelvic floor muscle, you can also have bedwetting. Mostly due to the downward shift of the bladder urethra and the resulting decrease in closure pressure, this will occur when getting up or turning over, coughing and other conditions bedwetting. Fourthly, if a patient has had urethral surgery, the sphincter muscle may be damaged and bedwetting may occur. For example, surgery on the prostate gland or surgery on the bladder neck can lead to incomplete closure of the bladder or sphincter urethra, and bedwetting can occur.