Atmospheric variables and subarachnoid hemorrhage: narrative review

Abstract Background Stroke is a neurological emergency that tends to be the first cause of death in many countries. Atmospheric variables are strongly associated with stroke, which subarachnoid hemorrhage (SAH) has been studies meteorological risk factors such as air pollution, pressure, weather changes, and ambient temperature. These characteristics may influence brain circulation SAH, being diagnosed idiopathic SAH or unknown cause. Objective The main objective this review present most relevant develop according current evidence supports strong association. Conclusion Brain vessel influenced by atmospheric pollution generating intrinsic changes intima vessels leads vasospasm comorbidities SAH.