hello. in my left leg,in foot... i feeling very severe frost,..cold.Sometimes im geting a stabbing wave of piercing pain..starting in heel and going to heart.Parent saying.... maybe your just cold,or put sox on.That feeling is in one leg,and the first time when i felt it ,was,about 2 years ago.Sometimes feeling so severe,that cant hold leg on the ground,trying to change siting position.Its like..... very cold.piercing stabbing lancinanting feeling.I dont know what is that?Maybe its serious.... and i cant say straight...that is pain.Its more freaky than pain. Sometimes feeling is like ... leg [HEEL} pierced to heart,or conversely.Very severe feeling.