Hi welcome to Health care magic forum. As you describe it appears to be some fungal infection
, we can only identify the type by personal examination only. I suppose it will be cured by systemic use of anti fungal tablets, supplemented by steroid
cream, with correct combination or anti fungal soap.
I advise you to consult a dermatologist
, for correct diagnosis and treatment.
I advise you to follow some diet recommendations as avoid taking fish, sea foods, and brinjal to avoid excess of itching , and scratches due to itching, which promotes secondary bacterial infection. Wishing for a quick recovery and thanks for calling.