One-year prognosis of non-traumatic cortical subarachnoid haemorrhage: A prospective series of 34 patients.

Introduction: Cortical subarachnoid haemorrhage (cSAH) has multiple aetiologies. No prospective study has reported the long-term progression of the condition. The objective of this study is to describe the clinical and aetiological characteristics of patients with cSAH and to gain insight into prognosis.