Dizziness Causes & Orthostatic Hypotension
Why Do I Get Dizzy Sometimes When I Stand Up?
When standing quickly, it may take a second or two for the body to make adjustments to constrict blood vessels and push blood up to the brain. If there is a delay, then this time of relative low blood pressure may cause symptoms. It can be exacerbated or seen more often in women who are pregnant, people with diabetes, those who become dehydrated, or are taking high blood pressure medications.
Symptoms include of dizziness upon standing (orthostatic hypotension) include:
- nausea, and
- fainting or passing out.
There may also be weakness, blurred vision, and shaking or tremulousness.
These symptoms may resolve quickly as the body slowly adjusts to the standing position, but in some cases the person has to sit or lie down quickly to prevent passing out or falling.