Hello dear
What you have is the kind of fungal infection which occurs due to sweating in that area. You need to start the treatment as soon as possible otherwise it may spread to your whole body slowly and slowly. There are many good treatment options which are available which can completely cure it. The earlier you start the treatment the better will be the results
Next Steps
For any further query you can contact me on Dr Atika Aesthetics my Facebook site
Health Tips
Avoid any self treatment or any application of steroid-based creams