Autonomic hyperreflexia

Autonomic hyperreflexia: Description, Causes and Risk Factors:Autonomic hyperreflexiaAutonomic hyperreflexia is a reaction of the autonomic nervous system (ANS) to overstimulation. Normally, the ANS controls blood pressure automatically. It does this by commanding muscles around blood vessels to tighten or relax in order to raise or lower blood pressure. The nervous system can monitor blood pressure and continually adjusts the commands to keep blood pressure normal.When a person has a spinal cord injury (SCI), the damage to the nerve pathways in the spinal cord can result in the loss of their ability to control the responses of the blood vessels. If the damage is at or above the middle of the back (the level called T6 for the sixth of the twelve thoracic vertebrae), the person may develop autonomic hyperreflexia.Other causes include medication side effects, use of illegal stimulants such as cocaine and amphetamines, Guillain-Barr

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