 Spontaneous subarachnoid hemorrhage SAH is usually caused by rupture of an intracranial aneurysm, but in up to 15 of patients with spontaneous SAH, no discernible bleeding source can be identified despite of repetitive radiological imaging. The blood distribution can be described as perimesencephalicprepontine or non-perimesencephalic. Depending on the pattern of SAH the clinical course of the patients can be similar to aneurysmal SAH. In general, patients with a perimesencephalic SAH PM-SAH are considered to achieve good outcome and to have lower rebleeding risk. However, long-term outcome data on patients suffering from spontaneous non-aneurysmal SAH non-aSAH is scarce and lacking for physical and psychological outcome. Therefore, the aim of the present study was to investigate the long-term physical and psychological outcome in patients suffering from non-aneurysmal spontaneous SAH. 