Penis scrotum inner thigh red. derm said not fungal. gave me vytone kinda worked.i have eczema. no more vytone. what is this? no itch no sore 1 pimple

It may be jock itch: ...even if the Derm didn't find fungus on a slide or culture. Because the fungus can hide in the hair follicles, it may take longer than 10-14 days to get rid of it. If you still have symptoms, ask your Derm for a refill of Vytone.. Fungi like heat & moisture, so keep the affected area clean and DRY, apply anti-fungal powder after bathing & wear cotton boxer shorts. Good luck!