Orthostatic hypotension is the sharp decrease in blood pressure caused by changes of position. It can occur at any age but it is more common in older adults.
It is promoted by a low volume of blood (bleeding, dehydration), lack of tone in the blood vessels, high blood pressure medication, pregnancy, alcohol intake, heat and Parkinson's disease.
It manifests with a feeling of dizziness and haze. If the drop in blood pressure is significant, it can cause a decrease in cerebral circulation and, as a consequence, loss of consciousness.
Diagnosis is clinical, through questioning and physical examination where a drop in blood pressure coinciding with a quick change of position may be seen.
The cause must be treated and general prevention measures taken. In more severe cases, medication may be necessary.
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