Ive got a little round sore that looks like a blister on the inside of my foreskin can i use betamethasone or clotrimazole on it of what must i do?

The most common cause of otherwise unexplained genital sores is herpes, which is also suggested by a "blister" lesion. Clotrimazole would not help and steroids like betamethosone probably would make it worse. See a health care provider ASAP for personal exam and testing. Good luck.

If you have had no sexual exposure- yes you can try it. If you have had then pl see your MD

If sexual may be herpetic and clotrimazole may worsen.Conditions like molluscum contagiosum not be helped therefore would not use unless diagnosis . yeast would be improved) F/u/w/ MD https://www.nhs.uk/common-health-questions/mens-health/what-is-this-lump-on-my-penis/#:~:text=Sores%20or%20ulcers,by%20syphilis%20(another%20STI). https://www.healthline.com/health/health-penis-sores#st-is