Here is the English translation of the provided text: "During sexual activity, if you can get an erection but do not ejaculate, and experience testicular swelling and pain, what should you do?"

Patient's question:

Old father, 79 years old, and mother have sexual life without ejaculation, testicular swelling and pain

Doctor's answer:

In your case, it could be orchitis, which is usually caused by bacteria and viruses. The testicles themselves rarely suffer from bacterial infections because they have a rich blood and lymphatic supply, making them highly resistant to bacterial infections. Most cases of bacterial orchitis are caused by inflammation of the nearby epididymis. It is recommended to use intravenous antibiotics for treatment. As you know, male dysfunction can cause significant harm to men, so it is important to seek treatment as soon as possible. In daily life, pay attention to dietary issues and avoid foods. Maintain a balanced diet. Additionally, regular follow-up visits may be necessary if needed.