What should you know about persistent orthostatic hypotension?

When you move upright, the body normally adjusts heart rate and blood-vessel tone to maintain blood flow to the brain. With orthostatic hypotension, that adjustment is not sufficient, so symptoms can appear after rising from bed, a chair, or a squat. Dizziness is common, but some people notice light-headedness, blurred vision, fatigue, nausea, neck or shoulder discomfort, or a feeling that they may faint.

Possible contributors include dehydration, recent illness, prolonged bed rest, heat, alcohol, nervous-system problems, and medicines for blood pressure or other conditions. The same symptom can have different causes, so do not stop prescribed medicine without advice.

Rise in stages: sit first, move your ankles, pause, then stand while holding a stable surface. Drink fluids regularly unless a clinician has restricted them, avoid overheating, and take care with hot showers and long periods of standing. Keep a record of symptoms, posture, meals, fluid intake, and medicines. Ask a clinician whether compression garments, salt changes, or an altered medicine schedule are suitable; these are not appropriate for everyone. Arrange a GP Consultation for repeated symptoms, falls, or fainting.

Call emergency services for fainting with chest pain, severe breathlessness, a racing or irregular heartbeat, serious injury, prolonged confusion, seizure, or new weakness, facial drooping, or speech difficulty. Seek prompt advice after a first faint, repeated falls, or an episode during exertion. Urgent review is also needed if dizziness comes with black or bloody stools, heavy bleeding, severe vomiting, or inability to keep fluids down.

Could any of my medicines or recent illness be lowering my pressure? Should I check blood pressure lying and standing? Are my fluid or salt limits relevant? How can I reduce falls, and which symptoms should trigger emergency help?