[Clinical criteria for the risk of stroke].

In order to detect a high risk group for the stroke development as early as possible, a comparative retrospective study based on specially-designed forms was carried out. It involved 67 stroke-survivors and 83 patients with initial manifestations of compromized brain circulation and showed that the pre-stroke period in the patients studied had been characterized by few or no symptoms at all. A high risk group should include people with asymptomatic arterial hypertension (AH) or AH attended by cephalgia as well as individuals with rare paroxysmal conditions that developed after 40 years.