This is Dr. David
is this rash itchy?
itchy rash in the groin can be from jock itch fungal infection of the area
fungus likes to grow in dark warm moist environments.
and the groin and thigh area is often dark and warm and moist
usually over the counter jock itch antifungal sprays and creams can help cure these fungal infections.
use of baby powder in the area can help dry the skin to keep the moisture away.
you can try clotrimazole 1% antifungal cream
or tolnaftate topical sprays to fight jock itch groin fungal infection.
let me know if you have questions.