Angiographic findings in spontaneous intracranial hypotension mimicking subarachnoid hemorrhage

Due to a wide variety of symptoms in the clinical presentation, immediate diagnosis of spontaneous intracranial hypotension (SIH) can be challenging. The headache may be very severe and the clinical picture can be first interpreted as subarachnoid hemorrhage (SAH) in the existence of supportive diagnostic findings. Moreover, there is insufficient data in the literature regarding the angiographic findings in SIH. We report on an unusual case of 51-year-old female, who presented in the typical setting of SAH and later diagnosed as SIH. We define additional angiographic findings in SIH with special attention to the craniocervical region. The importance of considering SIH in the differential diagnosis of SAH is also stressed.