How do i treat a yeast infection on the penis?

Topical cream: You want to make sure that this is the correct diagnosis. There are other diseases that can cause a skin lesion on the penis. If it is yeast you usually will use a prescription antifungal cream.

Exposure: Keep area clean, dry and exposed to air and light since yeast love a moist, dark, and warm environment. If this doesn't work, medication can be effective.