Weber's syndrome

- ipsilateral 3rd nerve palsy with contralateral hemiparesis
- unilateral infarct in midbrain (ventral lesion) due to occlusion of branch of basilar artery



Other 3rd nerve brainstem syndrome
Nothnagel's syndrome = 3rd nerve palsy + cerebellar ataxia
Benedikt's syndrome = 3rd nerve palsy + contralateral hemitremor
Claude's syndrome = 3rd nerve palsy + cerebellar ataxia + hemitremor