Patients with a history of neck trauma, chiropractic neck manipulation/high-velocity neck injury, or connective tissue disease (fibromuscular dysplasia, Marfan syndrome, Ehlers-Danlos syndrome) are at risk for carotid dissection. While carotid dissection accounts for only 1-2% of all ischemic strokes, it accounts for roughly 25% of all ischemic strokes in young adults.