Table 2.

Signs, symptoms, and structures involved in lateral medullary infarction

STRUCTURES INVOLVED	SIGNS AND SYMPTOMS
Descending tract and nucleus of the fifth nerve	Pain, numbness, impaired sensation over half the face
Vestibular nuclei and connection	Vertigo, nausea, vomiting, nystagmus, diplopia, oscillopsia
Descending sympathetic tract	Horner syndrome (miosis, ptosis, decreased sweating)
Issuing fibers ninth and tenth nerves	Dysphagia, hoarseness, paralysis of vocal cord, diminished gag reflex
Restiform body, cerebellar hemisphere, olivocerebellar fibers, spinocerebellar tract	Ataxia of limbs, falling to side of lesion
Cuneate and gracile nuclei	Numbness of ipsilateral arm, trunk or leg
Spinothalamic tract	Impaired pain and thermal sense over half the body, sometimes face