The involvement of groin and scrotal area could be due to psoriasis( known as inverse psoriasis
), some eczema or a fungal infection
. The treatment varies with the diagnosis. Psoriasis and eczema would require application of steroid
while fungal infection would require antifungal.ngal cream. I would advise you to visit your consulting dermatologist
so that the area could be examined for prescribing appropriate treatment.