Hello. Thanks for writing to us at healthcaremagic Most likely it is a fungal infection; fungal infections are common at sites such as groin folds because the fungus gets a chance to proliferate in the moist, humid conditions that prevail in the folds, specially in hot and humid weather conditions like tropical countries. You may use an OTC topical antifungal e.g clotrimazole 1% cream, twice daily for 4-6 weeks An OTC oral antihistamine e.g cetrizine 10 mg once daily will provide you symptomatic relief from itching. If the condition does not improve as expected you may visit a dermatologist for a review of the diagnosis. A KOH preparation can be made to see whether fungal elements are present or not. It is usually confirmatory in doubtful cases. Regards