Definition of meta-analysis : a quantitative statistical analysis of several separate but similar experiments or studies in order to test the pooled data for statistical significance new!
Numbness or tingling in the hands occurs when nerves in the arm or wrist are compressed or damaged, according to WebMD. One of the simplest causes for nerve compression during sleep is when the arm is bent for a prolonged time or rested underneath another part of the body.
Possible Causes of Numbness in Hands and Feet. 1. Multiple Sclerosis. Multiple sclerosis, or MS, is a type of autoimmune disease that affects the spinal cord and brain. It is due to damage of the myelin sheath, the protective covering around the nerve cells. In addition to numbness, other symptoms of MS include loss of balance, difficulty in moving the legs and arms, and muscle spasms. 2. Herniated Disc. Herniated discs may cause numbness in hands and feet as well as a tingling sensation. A herniated disc is when the cushioning between your discs or bones in the spine is pinched. The most common symptoms include numbness, pain or weakness in the lower back, an arm or a leg. 3. Vitamin B12 Deficiency