Hi.
Thanks for your query and an elucidate history.
Your history is very classical, you are 61, have continuous recurring infection of the ear on earning the
hearing aid. Once you stop wearing it becomes dry.
This indicates the following possibilities:
You have
mastoiditis which gets reactivated on using hearing aid as it increases local temperature and humidity.
You may have attendant medical problems like
diabetes.
I would advise you the following:
First of all get all the relevant blood and urine tests to rule out any medical problem,
anemia, diabetes and so on.
Secondly, get a
High Resolution CT scan of the mastoids to know the exact position of hte mastoiditis, whether surgery is required or not.
If so plan for a Surgery to clear the diseased part so that you will remain with dry ear.
Then it will be easy to use the hearing aid, the best way is the external one.
so that the problem of recurrent infection will just vanish off.