Medial medullary syndrome

Medial medullary syndrome
Other namesInferior alternating syndrome
Medulla oblongata, shown by a transverse section passing through the middle of the olive. (Medial medullary syndrome can affect structures in lower left: especially #5, #6, #8.)
SpecialtyNeurology 
Diagnostic methodIpsilateral signs and symptoms - flaccid (lmn) paralysis and atrophy of one half of tongue (hypoglossal nerve)

Contralateral signs and symptoms- spastic (umn) paralysis of trunk and limbs (contralateral corticospinal tract)

Impaired tactile, proprioceptive, and vibration sense of trunk and limbs (contralateral medial lemniscus)

Medial medullary syndrome, also known as inferior alternating syndrome, hypoglossal alternating hemiplegia, lower alternating hemiplegia, or Dejerine syndrome, is a type of alternating hemiplegia characterized by a set of clinical features resulting from occlusion of the anterior spinal artery. This results in the infarction of medial part of the medulla oblongata.

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