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Ever smack your elbow and experience that crawling , tingly numbness that quickly spreads down your arm and a few fingers ? What causes those " pins and needle " ?
The aesculapian terminal figure for the sensation is paresthesia , a word with Grecian origin meaning " disquiet perception . " One of the more common style to temporarily experience paresthesia is to polish off your " funny pearl , " which really is n’t a bone at all but the ulnar face that runs along your cubitus . In aesculapian terms , hitting the funny bone is call an ulnar nervus contusion .
That pins-and-needles sensation is quite tingly.
The ulnar nerve is one of the three major nerves in the arm and script . It set out in the articulatio humeri and turn tail down the inner upper weapon system , around the articulatio cubiti , down the forearm and end in the ring and pinkie fingers . Where it passes the cubitus — the median epicondyle of the humerus , a bony protrusion of the long humerus bone that organize your upper weapon system — it has hardly any ivory protecting it . A quick blow to the nerve at this juncture sends frisson down the boldness ’s length , which is why your arm and out fingers sense numb . [ If Blood Is red-faced , Why Are Veins Blue ? ]
Other vulgar cases of irregular paraesthesia happen when you scotch your peg for too long or fall asleep on your limb . The redundant system of weights puts free burning pressure on the nerves in the extremity , which cause the tingling you experience when your leg or branch subsequently " fall asleep . "
Hit funny bones and sleeping leg are painful , but at least they do n’t last very long . Some disorders and disease may induce continuing paresthesia , including central nervous system disorders such as stroke or multiple induration or tumor pressing on a nerve . In these cases , the burning prickling is constant ( or well-nigh - never-ending ) and , depending on the spot , it may only lessen once the shape is under control .
That pins-and-needles sensation is quite tingly.
Original level onLive scientific discipline .
