“…Consequently, this autoregulation affords better protection against damaging hypertension to the anterior than the posterior circulation. However, the protective sympathetic mechanism of the anterior circulation also may be overcome in severe cases and the brain stem, basal ganglia, frontal and temporal lobes, and cerebellum may also be involved [7], [8], [10], [13]- [16], [18], [19], [21]- [23]. In our case, the involvement of the left occipital lobe, both hemispheres of parietal and frontal lobes bilaterally, and the cerebellum bilaterally indicates a severe disturbance in cerebral autoregulation.…”