Hello. Thanks for writing to us at healthcaremagic Judging from your description and location of the rash, I would keep a possibility of Fungal Infection/ Tinea. Fungal infections usually affect the body folds and they may start out as small lesions which later on extend peripherally with central clearing thus resembling an annular lesion. The margin is usually red, raised and scaly. Itching is a feature of fungal infections. If I was the treating doctor I would have asked you to use an OTC topical antifungal e.g clotrimazole 1% cream, twice daily. An OTC oral antihistamine e.g cetrizine would provide you symptomatic relief from itching. However, If the condition does nt improve as expected, you may visit a dermatologist for a review of diagnosis and appropriate treatment. Regards