RecruitingPhase 2Drug trialInfusion of Lidocaine and Steroids in Middle Meningeal Artery for Pain in Subarachnoid HemorrhageThe goal of this clinical trial is to learn if an infusion of lidocaine, with or without steroids, into the middle meningeal artery (MMA) helps relieve severe headaches in patients with spontaneous subarachnoid hemorrhage (SAH). It will also study the safety of this treatment.