Posterior circulation infarct

Posterior circulation infarct (POCI) is a type of cerebral infarction affecting the posterior circulation supplying one side of the brain.

Posterior circulation stroke syndrome (POCS) refers to the symptoms of a patient who clinically appears to have had a posterior circulation infarct, but who has not yet had any diagnostic imaging (e.g. CT Scan) to confirm the diagnosis.

It can cause the following symptoms:
 * Cranial nerve palsy AND contralateral motor/sensory defect
 * Bilateral motor or sensory defect
 * Eye movement problems (e.g.nystagmus)
 * Cerebellar dysfunction
 * Isolated homonymous hemianopia
 * Vertigo

It has also been associated with deafness.