[Sneddon's syndrome. 2 case reports].

Two patients with idiopathic generalized livedo reticularis and associated cerebrovascular disease are reported. In one of the cases (case no. 1) skin vascular lesions were present in two members of the family, thus suggesting the existence of a possible predisposition to systemic vascular affection. The need of prevention of the neurological symptoms in patients with generalized livedo reticularis, through the exclusion of the nocive agents which can cause vascular damage is emphasized.