What should you know about mild orthostatic hypotension?

When you stand, gravity briefly shifts blood toward the legs. The nervous system normally tightens blood vessels and adjusts the heart rate to maintain circulation to the brain. With orthostatic hypotension, that adjustment may be insufficient, causing light-headedness, blurred vision, weakness, or a feeling that you might faint. Dehydration, illness, prolonged bed rest, heat, and some medicines can contribute. Symptoms may be mild and short-lived, but repeated episodes can increase the risk of falls and deserve assessment.

Rise in stages: sit on the edge of the bed, move your ankles, then stand while holding a stable surface. Pause before walking. Drink enough fluid for your health unless a clinician has restricted it, and avoid sudden standing in hot conditions. Sit or lie down immediately if symptoms start. Do not stop blood-pressure or other prescribed medicine without advice; a GP can review timing, dose, hydration, and other possible causes. Keep pathways clear to lower fall risk.

Seek emergency help if dizziness is accompanied by chest pain, severe breathlessness, a new one-sided weakness, trouble speaking, seizure, serious injury, or loss of consciousness. Arrange a GP consultation when episodes recur, worsen, cause falls, or begin after a medicine change. Prompt review is also wise if you have palpitations, ongoing vomiting, or signs of dehydration.

Ask whether your medicines, fluid intake, blood count, heart rhythm, or nervous-system function could be contributing, and how to measure symptoms safely at home.