Autonomic hyper-reflexion.
D001341:Autonomic Nervous System / Q000503:physiopathology*; D006261:Headache / Q000209:etiology; D006801:Humans; D011782:Quadriplegia / Q000150:complications / Q000503:physiopathology; D012021:Reflex, Abnormal / Q000209:etiology*; D013119:Spinal Cord Injuries / Q000150:complications / Q000503:physiopathology*; D014666:Vasomotor System / Q000503:physiopathology