Paresthesia

Pins and Needles

Paresthesia (paraesthesia in British English) is a sensation of tingling, pricking, or numbness of the skin with no apparent long-term physical effect, more generally known as the feeling of pins and needles. Transient paresthesia Most people have felt the sensation of an extremity "falling asleep". This lack of sensation is caused by a temporary impedance of blood flow to the extremity which results in nerve cells being starved of oxygen and glucose. Additionally, the impedance of blood ...