“…The vascular disturbance appears to be an arterioor atherosclerotic change in the small arteries of the brain and medulla, giving rise to a diffuse encephalopathic reaction, showing itself as hypertension or nephrosclerosis. According to von Rechenberg (1957), this syndrome, first described by Vigliani and Cazzullo in 1950, as " encephalopathia diffusa sulphocarbonica " appears only after 10 to 15 years' exposure, and once subacute symptoms have appeared is rapidly progressive. The disease has a slow, insidious onset and its development is punctuated by episodes of transient hemiplegia or spastic paresis.…”