When should you worry about fainting if you have postural hypotension?

Postural hypotension means blood pressure falls when moving upright. You may notice dizziness, dimming vision, weakness or fainting soon after standing from a chair or bed. Dehydration, heat, prolonged bed rest and medicines can make the drop more pronounced. A clinician should still confirm the pattern because fainting can arise from heart rhythm problems or other conditions.

At the first warning, sit or lie down immediately and avoid trying to walk through it. Rise in stages: move your ankles, sit at the bedside, pause, then stand while holding a stable surface. Drink fluids if this is suitable for you, avoid excessive heat and discuss compression garments or medication changes with a clinician. Keep a record of triggers and symptoms.

Emergency assessment is appropriate if you cannot be woken normally, have chest pain, severe breathlessness, a new irregular heartbeat, seizure-like activity, one-sided weakness, speech difficulty or a significant head injury. Arrange prompt review after a first faint, repeated episodes, fainting while exercising or an episode with no warning. Blood pressure measurements before and after standing can help guide the evaluation.

How should I measure my blood pressure at home? Could any prescription or over-the-counter medicine be contributing? Are my fluid and salt instructions appropriate for my other health conditions? When can I safely return to driving or exercise?