The treatment for fungal infection is simple. You have to take anti fungal tablets and creams for 4 to 6 weeks following which it resolves. Do not apply soap on that area and do not self treat with over the counter steroid creams. Mistreatment with steroid creams and treatment with cheaper sub standard medicine is the most common reason for recurrent disease. Kindly send photos for accurate diagnosis and prescription. Reinfection from people is household is another cause of recurrence.