“…2 Interestingly, there is no correlation between the side of the headache and the side of the thrombosis. 3 CVST was particularly high on the differential for our patient given her APS and her signs of intracranial hypertension (pulsatile headache worsened with maneuvers that increase intracranial pressure). The most common etiologies of CVST include heritable and acquired thrombophilias, oral contraceptives, pregnancy, malignancy, dehydration, infection, and traumatic head injury.…”