You may be suffering from fungal infection of the inner thighs groin and buttocks area which we call tinea cruris. this is commonly referred as jock itch. It is easily treatable by taking 4 to 6 weeks of treatment which includes tablets along with creams. Wrong treatment with over the counter creams like fourderm, panderm, quadriderm, dermi 5, betnovate dermikem OC candid B, hh zole leads to severe side effects and also repeated recurrences. please do not use super body wash over the affected areas. Do not use steroid containing combination creams. Please contact me using online consultation for detailed prescription. Do not delay treatment as it may spread for the on your body and also to other people living in the household.

As you have mentioned that you keep hygiene foremost. Sometimes frequent washing the area with  medicated soaps like Dettol can itself cause itching and irritation. Always use plain soaps. Also take treatment for fungus.

Don't worry..it can be cleared...Fungus or yeast infection....common around skin folds like thighs and genitals.. avoid sweating, sharing clothes,towels and soap.. specific medicine required depends on the severity.. for detailed prescription do direct online consultation by sending photos.

Hello dear. Kindly share clear pictures of the rash via online consultation for accurate diagnosis and treatment Or Visit clinic in Delhi