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Hello,Thank you for your question.I am Dr Saha, I shall try my best to help you.How long did the stain last?
Did you have any other symptom?
Did you have exposure to cold?
Did you have it checked by doctor?
Thank you for the information,I am sorry for your symptoms.Color changes can occur in lupus due to Raynaud's phenomenon.There can be vascular changes from it.Other possibility is appearance of rash from exposure to sun.However as the hand & feet feel cold, there can be problem with circulation.I would suggest to contact your PCP without delay.He can refer you to specialist after examination.I hope this information helps.If there’s anything else I can do, please let me know.Wish you early recovery.Please rate my answer excellent if you are satisfied with it.Regards.