Total anterior circulation syndrome (TACS) | Unilateral motor and/or sensory deficit of at least two areas of the face, arm, and leg |
| Homonymous hemianopia |
| Higher cerebral dysfunction—for example, aphasia, neglect |
Partial anterior circulation syndrome (PACS) | Any two of:unilateral motor and/or sensory deficit ipsilateral hemianopia higher cerebral dysfunction |
Posterior circulation syndrome(POCS) | Any of:ipsilateral cranial nerve palsy with contralateral motor and/or sensory deficit bilateral motor and/or sensory deficit disorder of conjugate eye movement cerebellar dysfunction without ipsilateral long tract deficit (that is, ataxic hemiparesis)isolated homonymous visual field defect |
Lacunar syndromes (LACS) | |
Pure motor stroke (PMS) | Unilateral pure motor deficit clearly involving two of three areas—face, arm, and leg—with the whole of any limb being involved |
Pure sensory stroke (PSS) | Unilateral purely sensory symptoms ± signs involving at least two of the three areas with the whole of any limb being involved |
Ataxic hemiparesis (AH) | Ipsilateral cerebellar and corticospinal tract signs with or without dysarthria in the absence of higher cerebral dysfunction or visual field deficit |
Sensory motor stroke (SMS) | PMS and PSS combined—that is, unilateral motor and sensory signs in the absence of higher cerebral dysfunction or visual field deficit |