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 is usually caused by damage, irritation or compression of one of the nerves or a branch of one of the nerves in your arm and wrist. Diseases affecting the peripheral nerves, such as diabetes, also can cause numbness, although with diabetes similar symptoms usually occur first in your feet. In very uncommon instances, numbness can be caused by problems in your brain or spinal cord, although in such cases arm or hand weakness or loss of function also occurs. Numbness alone is only rarely associated with potentially life-threatening disorders, such as strokes or tumors.
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