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Hi there,This is Dr Basu, experienced Internal Medicine Specialist.I am here to address your concerns and provide great service.
Pin and needles sensation are due to the nerve problem commonly.
Long standing or walking can cause nerve pressure at the foot commonly.
Also diabetes, vitamin B12 deficiency, thyroid disorder can cause this.
She should wear comfortable shoes with arch support for now.
Apply warm compress.
Get checked for diabetes also.Best wishes,It was my pleasure to help you today.If I have answered all your questions, Please rate my response Excellent (click on the 5th star).Please bookmark my profile for fast, reliable authentic answers!This is the link to my profile:http://www.justanswer.com/medical/expert-mysticdoc/