cold but sweaty feet

hi there..i live in maine and my floors are very cold in the winter...i walk around mostly in socks, and my feet are cold but if i use my slippers or sneakers my feet stay cold but get very wet...now on one side of my inner upper foot i have a reddish purple hot spot that hurts when i walk..what could be causing this? is it the cold? i am a healthy woman and have no problems that i know of....thankyou so much for any info...susan

Hi Susan,
Unfortunately, you have one of those problems that I would actually have to look at. It sounds like a black and blue mark, but I do not think you would write me about something like that, so the best thing I can suggest is have the discoloration looked at.
Sorry, I cannot be more helpful.
Marc Mitnick DPM