Suggest Ayurveda Medicine For Recurrent Vulvar Cyst

I am a woman 40 years old and suffering from recurrent vulval cyst. I have been operated three times . last operation was march 2011. small discharging sinus opening just lat to right labia major excexcision incision taken to it after injecting methylene blue sinus attending upto inf. pubic ramus & lateral upto medial thigh sinus tract totally excised loose stiches taken.
Please tell me the root cause of it and suggest an ayurvedic medicine.
Thanks