Lateral medullary syndrome

Also known as Wallenberg syndrome.

Vertebral artery is the most commonly involved artery (V4 segment) or Posterior Inferior cerebellar artery(PICA)

Right sided lateral medullary lesion

  1. Loss of pain and temperature in right side of face and left side of body.
  2. Ipsilateral palatal palsy and loss of gag reflex due to involvement of IXth and Xth cranial nerves.
  3. Ipsilateral ataxia nad horners syndrome(because sympathetic chain runs along this course)
  4. Dysphagia,nystagmus.
  5. Loss of taste sensation on ipsilateral part of tongue.
  6. No hemiplegia/Hemiparesis.

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