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from Wikipedia, the free encyclopedia

Local anesthetic

A local anesthetic is a drug that reversibly inhibits the propagation of signals along nerves.

When it is used on specific nerve pathways, effects such as analgesia (loss of pain sensation) and paralysis (loss of muscle power) can be achieved.

Note:   The above text is excerpted from the Wikipedia article "Local anesthetic", which has been released under the GNU Free Documentation License.
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