Thanks for posting your query.
With the available described symptoms, there appears to be possibility of fungal infection
"Candida Albicans" which is a normal commensal fungus in human beings.
Human body has normal protective mechanisms which prevents growth of candida albicans.
Frequent use of antibiotics and soap removes protective mechanisms and predisposes to proliferation of fungus.
There appears to high chances of persistence of fungal infection.
You should consult with internal medicine specialist/ dermatologist
and should go for thorough check up.
You should go for KOH mount preparation for candida albicans.
You should apply antifungal ointment on glans penis
Dr. Mayank Bhargava