What causes dysesthesia during lumbar puncture (LP)?

Updated: Aug 02, 2018
  • Author: Gil Z Shlamovitz, MD, FACEP; Chief Editor: Helmi L Lutsep, MD  more...
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Answer

Irritation of nerves or nerve roots by the spinal needle can cause different lower-extremity dysesthesias. Withdrawing the needle without replacing the stylet can cause aspiration of a nerve or arachnoid tissue into the epidural space. To prevent this complication, always replace the stylet before moving the needle.


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