Don't worry..100% cure possible with specific medicine...Don't worry...you are suffering from seborrheic dermatitis causing dandruff... Specific medicine available for good control... Treatment depends on the severity..Do direct online consultation for detailed prescription by sending photos.

You may be suffering from tinea cruris which is fungal infection of the inner thighs, groin and buttocks area. It is also called jock itch. It can be treated by taking four to six weeks of anti fungal treatment which includes tablets along with creams. Do not use soap over that area. Mistreatment with over the counter Steroid containing creams like fourderm, panderm, quadriderm, dermi5, cloben g betnovate, dermikem OC, candid b etc lead to repeated case of recurrence and also side effects due to application. Do not use steroid containing combination creams. Please contact me using online consult option with photos for detailed prescription. Do not delay treatment as it may spread further on your body and also to other people living in the household

It's not genetic or hereditary.  Fungal infections are becoming a big problem these days.. There are some good anti fungal medications available.. u can consult us online for detailed discussion and prescription

A complete detailed history along with clinical pictures are required to make a diagnosis and suggest appropriate treatment. A lot of skin conditions look alike. I would suggest you to take a direct consultation so that appropriate diagnosis and treatment can be suggested