Called paresthesia, pins and needles are caused by blocked blood flow to a pressed nerve.
From the abcnews.go.com
Paresthesia coverage depends upon which afferent nerves are stimulated.
From the en.wikipedia.org
A few minutes after ingestion paresthesia begins in mouth and extremities and then spreads throughout the body.
From the en.wikipedia.org
Overdoses cause hyperkalemia, which can lead to paresthesia, cardiac conduction blocks, fibrillation, arrhythmias, and sclerosis.
From the en.wikipedia.org
Paresthesia is a sensation of tingling, pricking, or numbness of the skin that may result from nerve damage and may be permanent or temporary.
From the en.wikipedia.org
This nerve connects to the part of the brain that interprets headache pain, so interfering with its activity can swap pain sensations for tingly paresthesia.
From the latimes.com
The most easily recruited by a dorsal midline electrode, close to the pial surface of spinal cord, are the large dorsal column afferents, which produce broad paresthesia covering segments caudally.
From the en.wikipedia.org
More examples
Abnormal skin sensations (as tingling or tickling or itching or burning) usually associated with peripheral nerve damage
Paresthesia (or), spelled paraesthesia in British English, is a of tingling, pricking, or numbness of a person's skin with no apparent long-term physical effect. ...
A sensation of burning, prickling, itching, or tingling of the skin, with no obvious cause
(paresthesias) Unusual sensory symptoms of tingling, numbness or other abnormal feelings of sensation.
(paresthesias) Abnormal sensations ranging from burning to tingling. (29)
A change in feelings or sensation. May be an increase in feeling (pain) or a decrease in feeling (numbness).
Is a "buzzy" or funny feeling from nerve injury. It is nonpainful.
Numbness, prickly sensations, or abnormal hypersensitivities, all local to one part of the body, and without an obvious cause.
Abnormal sensations, such as burning, tingling, or a "pins-andneedles" feeling, that occur without external stimulation. Paresthesia can occur as a symptom of peripheral neuropathy or as a side effect of certain anti-HIV drugs. See Also: Peripheral Neuropathy