by Marcin Gornsiewicz, M.D.
It is definitely a strange sensation to wake up in the middle of the night unable to move an arm or to sit with legs crossed then be unable to walk, due to a loss of sensation, as if the legs are not there anymore. This is called temporary paresthesia. When pressure is applied for a prolonged period of time either by sleeping on an arm or sitting on a foot, nerves are compressed and kept from sending massages back to the brain properly. The communication from the brain to other parts of the body os basically cut off. Once the body moves again, the pressure is off the arm or leg. The feeling comes back slowly, however, there is re-adjustment time. There may be an itching, pricking, tingling “pins and needles” sensation before the body part finally returns to normal. We all go through this once in a while, and it is completely benign and normal, but if tingling and numbness occurs on a regular basis, it may be a sign of a certain medical condition. The most common condition affecting over 8 million Americans each year is Carpal Tunnel Syndrome (CTS). Read more →