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Definition
By Mayo Clinic staffOrthostatic hypotension — also called postural hypotension — is a form of low blood pressure that happens when you stand up from sitting or lying down. Orthostatic hypotension can make you feel dizzy or lightheaded, and maybe even faint.
Orthostatic hypotension can happen to anyone but is more common in older adults. More than 15 percent of those 65 and older have orthostatic hypotension. Orthostatic hypotension is often mild, lasting only a few seconds or a few minutes after standing. However, orthostatic hypotension can be a sign of more-serious problems, so talk to your doctor if you frequently feel lightheaded when standing up.
If you have mild orthostatic hypotension, you may not need treatment. The treatment for more severe cases of orthostatic hypotension depends on what's causing your episodes of low blood pressure.
Symptoms
