Patient's question:
Here is the English translation of the provided text, with the return characters kept as they are:"Given by a friend, what goes well with beef tendon? Some say this can treat impotence. I have been married to my wife for many years, without any contraception, but we have never been able to conceive. After checking at the hospital, I learned that... Please ask."
Doctor's answer:
Erectile dysfunction refers to a condition where a man's penis does not become sufficiently rigid during sexual activity, or if it does, it does not remain firm long enough to complete normal sexual intercourse, or the penis is simply unable to enter the vagina for masturbation. It is one manifestation of "premature ejaculation" and is a common sexual dysfunction in men. When sexual function is affected by factors such as unstable emotions, fatigue, poor health, or a lack of enthusiasm or opposition from the female partner, it may lead to temporary "premature ejaculation." Such occasional occurrences should not be considered pathological. Only when these factors are ruled out and the condition repeatedly occurs under normal sexual stimulation, resulting in successful masturbation, can it be confidently diagnosed as premature ejaculation.