Wallenberg syndrome

Last updated: April 11, 2022

Summarytoggle arrow icon

Wallenberg syndrome is a neurological condition caused by a lateral medullary infarction, which results from occlusion of either the posterior inferior cerebellar artery (PICA) or the vertebral artery. For this reason, it is also referred to as lateral medullary syndrome or PICA syndrome. Symptoms include ipsilateral Horner syndrome, palate weakness, hemiataxia, and contralateral sensory disturbances. Management is supportive, and may include swallowing and speech therapy, as well as a feeding tube in some cases.

Clinical featurestoggle arrow icon

Overview [1]
Clinical features Structure affected
  • Facial pain [2]
  • Loss of pain and temperature in the face
  • Loss of pain and temperature in the trunk and limbs

Diagnosticstoggle arrow icon

Treatmenttoggle arrow icon

  • See “Stroke.”
  • Additional supportive therapy: speech and swallowing therapy

Referencestoggle arrow icon

  1. Wallenberg's Syndrome Information Page. . Accessed: March 30, 2017.
  2. Sabine Fitzek, Ulf Baumgärtner, Jürgen Marx, Felix Joachimski, Hubertus Axer, Otto W. Witte, Clemens Fitzek. Chapter 15 Pain and itch in Wallenberg's syndrome: anatomical–functional correlations. Elsevier ; 2006: p. 187-194
  3. Diplopia in Wallenberg's syndrome. Updated: January 1, 2004. Accessed: March 30, 2017.

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