There has been rash with itch on penis foreskin only and that too at the beginning of foreskin on a very small portion. It itch like for 5-6 sec and not frequently. Use to apply itch guard over it but not apllying regularly. Problem still persist. However if I apply itch guard like for 3-4 days, it's start curing. But didn't go away completely. What may be the possible cause and how can it be cured???