Talk to Dermatologist on Type Of Rash

Aoa . I have been suffereing from a rash that is very itchy mosty when my body is warm or moist . The rash texture is dry and the effected parts are: groin , inner thighs , gluteal , sacral , coccyxgial, pubic . In the beggning it felt like normal itch but within a short spane it spreaded to other parts . And the itch is gettimg painfull now .. help me doctor i want instant relief . Thank you ✌