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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.
Mot likely cold sensitivity related color changes.
Is there any swelling?
Since no pain, there is no imminent danger.
Arterial or venous blockage will cause pain and swelling quickly.
So that is unlikely. 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 and authentic answers!This is the link to my profile:http://www.justanswer.com/medical/expert-mysticdoc/