P006. Clinical management of migraine attributed to cerebral venous sinus thrombosis

Background Cerebral venous sinus thrombosis (CVST) is the presence of a blood clot in the dural venous sinuses. Symptoms include migraine, abnormal vision, strokelike signs, seizures, and abnormalities of consciousness and mental status. CVST incidence is 3-4 cases per million adults with a higher frequency among younger people < 40 years old, thrombophilia patients, women who were pregnant and using hormonal contraceptives. Other risk factors are chronic inflammatory diseases, blood disorders, meningitis, ear, nose and throat infections, venous sinuses injuries, surgical procedures in the head and neck area, homocystinuria. Diagnosis requires neuroimaging. Recommended treatment is with anticoagulants [1]. The aims of our retrospective study were to detect CVST incidence among patients accessing our outpatient headache day service (DS) programme, whose main symptom was headache, to compare data with pre-existing estimation, and to identify diagnostic and therapeutic procedures in our clinical management of CVST.