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.
Well as you describe,in my opinion,it's balanitis.
It can be caused due to fungal infection/bacterial/allergic to harsh soaps,not rinsing soap off properly while bathing /poor hygiene. It is also possible to have an irritation balanitis, which could follow intercourse if the woman used a feminine hygiene product to which you are sensitive.
As you had already tried creams with little effects so I would recommend that you would need to get a swab of the infected area to get it cultured to know for the cause of infection and get treatment accordingly.
Recent studies have shown that balanitis is due to a chemical reaction seen due to frequent washing with soap.
So clean your genital area with plain water.
Wear loose fitted clothes to prevent friction.
Also use abzorb powder if you have excessive sweating.
Start a multi-vitamin supplement.
The best option may be to be seen by a urologist to perform an appropriate evaluation.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
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It’s my pleasure to continue this conversation until you satisfy.
Waiting for your response.