Blood pressure can fall on becoming upright, sometimes causing dizziness or fainting. Some people have no symptoms, while others report blurred vision, fatigue, or weakness.
Disrupted circulatory responses can allow blood to pool in the lower body. Bed rest and altered autonomic control can impair normal adjustments to gravity.
Clinicians compare blood pressure across positions and consider symptoms. Supported position changes can enable assessment when standing independently is impossible.
