When the sexual nerve is damaged, patients with relatively mild damage will experience numbness, pain, and erectile dysfunction, while severe patients will experience erectile dysfunction or even permanent inability to get an erection, and this condition is very difficult to cure. This is because nerve damage is an irreversible and permanent injury. Nerve damage is usually caused by improper surgical operation, or usual trauma, so care must be taken to avoid it. Men who have a long history of excessive masturbation can affect the sensitivity of the glans, which can also lead to erectile dysfunction.