ttps:////»https://www.w3.org/TR/REC-html40/loose.dtd»>
They usually happen when the nerves in the peripheral nervous system receive certain types of stimulation. This part of the nervous system responds to stimuli from the touch receptors and also controls muscle movement. The stimulus that causes the tingling can be either the result of pressure on the nerve or an inflammatory process or, what is more common, a lack of blood supply – like when we cross one leg over the other. “The so-called external publiteal sciatic nerve, located below the knee, is pressed, causing tingling”, says neurologist Saul Cypel, from Hospital Albert Einstein, in São Paulo. If the pressure continues for a long time, the person may even temporarily lose movement, as this nerve is also responsible for the leg muscles. In addition, a lack of vitamins – mainly B1 and B12 – can also trigger the tingling sensation.