Scientists probe the mystery of dizziness when standing
NCT ID NCT00608725
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at why some people, especially young women, feel dizzy, tired, or have a racing heart when they stand up—a condition called orthostatic intolerance. Researchers will measure things like blood volume, sweat response, and heart rate in 260 participants to better understand what goes wrong. The goal is to describe the underlying mechanisms, not to test a new treatment.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- What this could lead to
- If successful, this research could help doctors better understand the root causes of orthostatic intolerance, potentially guiding future treatments.
- What could go wrong
- This is an observational study, not a treatment trial, so it won't directly improve symptoms. The findings may not apply to everyone with the condition.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Vanderbilt University
Nashville, Tennessee, 37232, United States
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