This is limited details and more precise information is needed about your skin condition which can help in planning a treatment. A thorough history, clinical examination and appropriate laboratory tests will be needed to solve the mystery. A photograph would have been helpful. Consider seeing a Dermatologist for proper diagnosis and treatment plan. It may be a fungal infection called candida and can be confirmed on consultation.
Next Steps
You can call for few dermatology centres in your neighbour hood clinics,
Health Tips
Avoid Self Medications.