Blood coagulation disorders such as lack of Antithrombin III, protein C, or protein S, have been identified as a particularly important origin of the cerebral sinus-venous thrombosis. It is subject to discussion whether the patient should be advised against any further pregnancy. From a medical point of view, a subsequent pregnancy seems acceptable because the risk of another thrombosis, which is a rare event anyway, can be significantly reduced by providing anticoagulation substances.