Why is it that sex is hard at first but becomes soft once it goes in?

Patient's question:

Patient Gender: Female
Patient Age: 27
Hello, if you have difficulty achieving or maintaining an erection, or if your erection is firm but brief, making sexual intercourse impossible, this may be a symptom of erectile dysfunction. The conditions you described fall under the category of erectile dysfunction. It is recommended that you visit a hospital to rule out whether it is indeed erectile dysfunction or phimosis.

Doctor's answer:

Hello, if you have difficulty achieving or maintaining an erection, or if your erection is firm but brief, making it impossible to engage in sexual intercourse, this may be a symptom of erectile dysfunction. The situations described above fall under the category of erectile dysfunction. It is recommended that you visit a hospital to rule out whether the issue is due to erectile dysfunction or phimosis. If phimosis is present, surgical treatment should be considered as early as possible. As most people are aware, prostatitis can cause significant harm to men, so it is important to seek treatment promptly. In daily life, pay attention to dietary issues and avoid foods. Maintain a balanced diet. Additionally, regular follow-up appointments may be necessary when needed.