Baroreflex failure

Baroreflex failure is a rare condition where the body loses its ability to properly regulate blood pressure through a system called the baroreflex. Normally, special sensors in the neck arteries (called baroreceptors) constantly monitor blood pressure and send signals to the brain to keep it stable. When these sensors or their nerve pathways are damaged, blood pressure can swing wildly — shooting dangerously high or dropping very low, sometimes within the same day. This condition is also sometimes called 'baroreflex dysfunction' or 'baroreceptor failure.' The most common causes include damage from neck radiation therapy (often used to treat head and neck cancers), surgical injury to the carotid arteries or nearby nerves, tumors affecting the carotid body, or conditions like familial dysautonomia that affect the autonomic nervous system. In some cases, no clear cause is found. People with baroreflex failure often experience dramatic, unpredictable blood pressure changes, rapid heart rate swings, severe headaches, and episodes of flushing or sweating. Emotional stress or physical activity can trigger dangerous spikes. Treatment focuses on managing symptoms using medications that calm the nervous system, such as clonidine, and making lifestyle changes to reduce triggers. There is no cure, but with careful management, many people can achieve better stability and quality of life.

Bring these to your next appointment

• Q1.What is the most likely cause of my baroreflex failure, and can that cause be treated?,What blood pressure readings should prompt me to seek emergency care?,Is clonidine the right medication for me, and what are the risks if I miss a dose or stop taking it?,Should I be wearing a continuous blood pressure monitor, and how often should I check my blood pressure at home?,Are there activities or foods I should avoid to reduce the risk of a blood pressure crisis?,Should I see a clinical geneticist to find out if there is an inherited cause?,What is my long-term risk of stroke or heart disease, and how can I reduce it?

Common questions about Baroreflex failure

Related conditions

Other rare diseases commonly researched alongside Baroreflex failure.

• Multiple system atrophy→
• Pure autonomic failure→