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Introduction/Background: Subarachnoid hemorrhage (SAH) is one of the most common acute craniocerebral disorders.SAH has a high mortality rate and survivors often suffer from remainin neurological dysfunction.The etiology of SAH is complicated.Its diagnosis and differential diagnosis are difficult,and methods of assisted examination are limited.Therefore,the process of diagnosis is fraught with traps,and the rates of misdiagnosis and missed diagnosis are high.Case Presentation: The patient,a 39-year-old woman,had complained of headache combined with transient aphasia.She had a medical history of migraine.Physical examination suggested probable positive neck resistance.Head CT showed no obvious abnormality.Examination of the head by fluid-attenuated inversion recovery (FLAIR) and susceptibility weighted imaging (SWI) suggested subarachnoid hemorrhage.Spinal digital subtraction angiography (DSA) indicated spinal arteriovenous malformation.The final diagnosis was spinal arteriovenous malformation combined with spinal subarachnoid hemorrhage.Following diagnosis,appropriate drugs were administered and interventional embolization was performed.The prognosis was poor.