“…Its various possible clinical manifestations range from brain stem ischemia and compression to SAH. Rare cases of spontaneous basilar artery dissection in previously healthy people have been described [2,3]; most cases occur in older patients with basilar artery atherosclerosis [4]. Predisposing factors include trauma, atherosclerosis, hypertension, cystic medial degeneration, fibromuscular dysplasia, syphilis, contraceptive drugs, and migrain [2].…”