It can be a sign that you have poor circulation, it is always best to check with your doctor when there are any changes with your legs, feet arms hands (ie cold or numbness. tingling, burning sensations)

yes you should never walk around bare feet especially if diabetic if you cut for feet it can cause all sorts of problems

I am 78 yrs old & have cold feet & nose. Doctors have always not given any help. Makes me I think I am just strange! It is surprising that no doctor (and I have been to many) would offer help with this. I just keep my mouth closed now. My biggest battle now is sweats at night. My past doctor does not know what to do about this either. I have changed docs agin so maybe I will get some help.

I would check with my doctor as it may be a warning sign of poor circulation .

Raynaud's is a possibility n isnt diabetic related