Hello and thanks for trusting me to help you. I am a board certified consultant with over 30 years of experience.I understand your concern.
Orgasm has more to do with the brain than with the body.
So in most cases, inability to orgasm is psychological in nature could be related to the relations with the sexual partner or due to other stress factors like divorce also.
Performance anxiety can be contributing factor also.
But certain medical conditions can also cause inability to orgasm, despite achieving a good erection.
These conditions are thyroid hormone dysfunction, low testosterone level, certain hormonal problems, Male Orgasmic Disorder,diabetes.
So the first thing to start with are basics- you need blood work to check your blood counts and testosterone level,thyroid function test to ensure they are okay.
Second, things that hurt erections such as alcohol,smoking should be eliminated from your diet.
See an Urologist for further evaluation and management.
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