Patient's question:
Here is the translation of the provided text into English, with the specified requirements in mind:"After 8 years of masturbation, the penis cannot fully erect. During masturbation and ejaculation, the ureter is pinched to prevent semen from being expelled. Sometimes, during ejaculation, there is significant pain in the penis. The scrotum is very small."
Doctor's answer:
Masturbation frequently can lead to prostatitis and urinary tract infections, and cause poor mental state, fatigue, low libido, affect work and study, and even impact fertility. It is recommended not to wear tight underwear. Avoid exposure to sexual stimuli such as images and sounds. Go to bed only when you feel the need for sleep. Do not linger in bed in the morning; get up immediately after waking up to avoid getting lost in thoughts. However, these symptoms generally improve on their own once the habit is quit.