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!
Hand numbness while sleeping has a variety of causes, including sleeping position, carpal tunnel syndrome and diabetes, according to WebMD. Other possible causes include vitamin deficiencies, alcoholism, infections and injuries.
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