Hello, as in the title the external sides of both my feet and heels got numb and cold, I feel no pain and no tingling sensation, only completely numb I barely can feel my hands touching the external sides under the ankles. The heel and back of feet are also colder than the front area and toes. I noticed it about 10 days ago, while on a very busy time at work I have been sitting at my desk including some weekends for about 2 months and a week ago I started feeling like a short shock sensation when compressing the back of my ankle, could this all be due to nerve compression? How can I fix it? Thank you.