Orthostatic hypotension is a sudden fall in blood pressure that occurs when a person assumes a standing position. When orthostatic hypotension is caused by hypovolemia due to medications, the disorder may be reversed by adjusting the dosage or by discontinuing the medication. When the condition is caused by prolonged bed rest, improvement may occur by sitting up with increasing frequency each day. In some cases, physical counterpressure such as elastic hose or whole-body inflatable suits may be required.
Dehydration is treated with salt and fluids.
The prognosis for individuals with orthostatic hypotension depends on the underlying cause of the condition. National Institutes of Health Bldg. This fact sheet is in the public domain. You may copy it.