Version May 2024
| Findings | Likely cause |
| Third nerve palsy | Usually posterior communicating aneurysm; also posterior cerebral artery and superior cerebellar artery aneurysms |
| Sixth nerve palsy | Elevated intracranial pressure (false localizing sign) |
| Combination of hemiparesis and aphasia or visuospatial neglect | Middle cerebral artery aneurysm, thick subarachnoid clots, or parenchymal hematomas |
| Bilateral leg weakness and abulia | Anterior communicating artery aneurysm |
| Ophthalmoplegia | Internal carotid artery aneurysm impinging upon the cavernous sinus |
| Unilateral visual loss or bitemporal hemianopia | Internal carotid artery aneurysm compressing optic nerve or optic chiasm |
| Impaired level of consciousness and impaired upward gaze | Pressure on the dorsal midbrain due to hydrocephalus |
| Brainstem signs | Brainstem compression by basilar artery aneurysm |
| Neck stiffness | Meningeal irritation by the presence of subarachnoid blood |
| Retinal and subhyaloid hemorrhages | Sudden increase of intracranial pressure |
| Preretinal hemorrhages (Terson syndrome) | Vitreous hemorrhage due to severe elevations of intracranial pressure |
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