Brief Answer:
It may be premature ejaculation problem, provide more details.

Detailed Answer:
Hello Mr. XXXXXXX

From your query, I understood that your erection does not last long as before and ejaculation occurs early. If it is right, I can say that you may be suffering from premature ejaculation(PME).

PME is defined as male ejaculates before female partner gets orgasm during intercourse(sex).
It can be treated with stop and squeeze technique as well as with medicines like paroxetine or clomipramine. Some other measures depending upon detail sexual history can also solve this problem. For that consultation with a psychiatrist or qualified sexologist is needed.

However, if you mean to say that your erection revert back to loose normal state of penis without ejaculation, it is different problem called erectile dysfunction(ED).
Treatment of ED depends on cause. It may be sex counselling, master and XXXXXXX technique, 5-PDE inhibitor groups medicines and other pharmacotherapy.

Please revert back to me with following details,

- Clarify your problem after understanding explanation given by me as above.

- Are you married? If yes, since when problem is there? How is your relationship with wife? If not married, do you masturbate or enjoy with girlfriend? Provide detail regarding that.

- Let me know your education and occupation.

- Do you use any substance like tobacco, smoking or alcohol. If yes, detail regarding the same.

Waiting for your reply.

Regards,
Dr.Chintan Solanki.

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