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Greetings of the day
If you are keeping good health and no other symptoms then there is no cause for concern.
The most commenenst cause of itching in post menopausal lady is likely to be post menopausal syndrome. Think of the commenest cause and its unlikely one will be wrong.
Think of rarest cause like lymphoma
and one would expect to be wrong.
In case you need any further assistance, will be glad to assist you.
Wishing you happy and healthy life
Dr T Shobha Deepak