What Are the Signs of Neurogenic Shock? Neurogenic shock is one of the most easily missed and misunderstood types of shock in EMS. It’s not caused by blood loss, it’s caused by a sudden loss of sympathetic nervous system control over the blood vessels, usually due to a spinal cord injury. What Causes Neurogenic Shock? Neurogenic shock most commonly occurs after high spinal cord injuries (T6 or above). These injuries disrupt the sympathetic nervous system, leaving the parasympathetic system (vagu