Orthostatic Hypotension: Why You May Feel Dizzy Or See Black Spots When Standing Up After Sitting

Have you ever stood up quickly after sitting for a long time and suddenly felt dizzy or saw black spots in front of your eyes? This phenomenon is often linked to a condition known as orthostatic hypotension. It occurs when your blood pressure drops rapidly as you stand up, causing temporary reduced blood flow to the brain.

Who Is More Likely to Experience Orthostatic Hypotension?

Orthostatic hypotension is most commonly observed in older adults, whose bodies may have a weakened ability to regulate blood pressure. However, it can also affect younger individuals, especially those with low physical stamina or certain health conditions. Women with naturally weak constitutions may also be more prone to this issue.

Medications That Can Contribute to the Condition

Some medications can increase the risk of experiencing this type of dizziness. These include alpha-blockers, often prescribed for prostate issues, and drugs like sildenafil (Viagra). People taking these medications should be particularly cautious when changing positions quickly.

How to Manage and Prevent Symptoms

For younger individuals, improving overall fitness through regular physical activity can significantly reduce the frequency of these episodes. Staying well-hydrated is also crucial, as dehydration or conditions that cause fluid loss—like diarrhea or excessive sweating—can lower blood volume and increase the risk of orthostatic hypotension.

Special Considerations for Older Adults

Older adults should take extra care when transitioning from sitting to standing. Moving slowly and deliberately can help the body adjust to the change in posture. When treating hypertension in seniors, doctors often prefer long-acting calcium channel blockers that provide more stable blood pressure control without sharp fluctuations.

Medication Interactions and Safety

It's important to be aware of how medications interact. For example, combining alpha-blockers with antihypertensive drugs or using sildenafil with nitrates like nitroglycerin can dangerously lower blood pressure. If you're experiencing frequent episodes of dizziness or vision loss upon standing, it's essential to consult with a healthcare professional to review and adjust your medication regimen if necessary.