Itching / Burning Sensation Around Vagina and Anus?

Menopause for last 13 years. severe Itching outside vagina and anus; sometimes burning sensation and soreness around anus. It started as a mild itch 9 years back. Have used Hydrozole for 5+ years. Even though 1 wk application of the ointment used to provid relief for weeks before, it has become less effective and need to apply everyday to reduce the itching and burning sensation. Is there a permanent cure for this? Any oral medicine I can take?

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