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.
By Mayo Clinic Staff. Numbness in one or both hands describes a loss of sensation or feeling in your hand or fingers. Often, hand numbness may be accompanied by other changes, such as a pins-and-needles sensation, burning or tingling. Your arm, hand or fingers may feel clumsy or weak. Numbness can occur along a single nerve in one hand, or it may occur symmetrically in both hands. Causes.