Medical Definition of autonomic dysreflexia
: a disorder of spinal reflex activity occurring in those with spinal cord injury that is characterized by a sudden onset of hypertension, bradycardia, excessive sweating, and headache Patients with high thoracic or cervical spinal cord lesions are at risk of autonomic dysreflexia … — Merck Manual of Diagnosis and Therapy, 18th edition, 2006
Note: Autonomic dysreflexia results from a faulty response of the sympathetic nervous system to stimuli (as from distension of the bladder or bowel) received below the spinal cord lesion.
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