Associated with the nervous system orthostaticOrthostatic
Relating to standing up hypotensionHypotension
Abnormally low blood pressure (nOH) is a condition that causes abnormally low blood pressureBlood pressure
The force the blood has on the arteries. It has two numbers: top/bottom (systolic/diastolic) after standing in people with nervous system disorders. If you have nOH, it means the type of orthostatic hypotension (OH) you have is caused by an underlying nervous system disorder, like Parkinson’s diseaseParkinson’s disease
A nervous system disorder associated with damage to nerve cells in the brain and nerves that control movement and cause malfunction of involuntary bodily functions (such as blood pressure control), multiple system atrophyMultiple system atrophy
A rare, Parkinson’s-like neurologic disorder that causes problems with movement, loss of coordination, and malfunction of involuntary bodily functions (such as blood pressure control) (MSA), pure autonomic failurePure autonomic failure
A very rare, neurologic disorder characterized by damage to regions of the nervous system that control involuntary bodily functions (such as blood pressure control) (PAF), or another autonomic disorder.
Because these conditions cause damage to the nervous system, the body may not release enough of a chemical called norepinephrineNorepinephrine
A chemical in the body that, among other functions, signals the blood vessels to tighten and increase blood pressure, which helps to keep blood pressure from dropping too low. Without enough norepinephrine, blood pressure remains low after standing, which may result in symptoms like dizziness, lightheadedness, blurry vision, or fatigue. Watch this video to learn more.
nOH is a specific type of OH, also known as postural hypotension. OH is a sustained drop in systolic (the top number) blood pressure of at least 20 mm Hg or diastolic (the bottom number) blood pressure of at least 10 mm Hg that happens within 3 minutes of standing. OH tends to happen more often as people get older. Additionally, any of these factors can cause OH: