acroparesthesia
noun
ac·ro·par·es·the·sia
variants:
or chiefly British acroparaesthesia \ ˌak-rō-ˌpar-əs-ˈthē-zh(ē-)ə 
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Medical Definition of acroparesthesia
: a condition of burning, tingling, or pricking sensations or numbness in the extremities present on awaking and of unknown cause or produced by compression of nerves during sleep