Suggest Remedy For Problem In Maintaining Erection After Wearing Condom
Psychological barrier, nothing serious .
Detailed Answer:
Hi.
The obvious reason is psychological, the breakage-in-process of erection.
This happens in many people.
The physiology of the erection, actual sex, ejaculation and anything related to these process is necessary based on the psychological process and occurs completely normal if there is no interruption.
There is interruption in this process in form of distraction caused by wearing the condom and is sufficient in your case to cause the loss of sensation and maintaining hardness.
This is proved by the fact you mentioned that erection and insertion is normal without condom.
There is no specific medical reason other than this.
You may have to live without condom.
Just small queries:
Are you married?
Why do you need to use condom - for protection or avoiding the pregnancy ?
I hope this answer helps for an insight.
Please fell free to ask for more if you need further clarification or assistance.