How effective is GP consultation for low blood pressure?

Low blood pressure may cause light-headedness, blurred vision, weakness, nausea or fainting, especially when standing. Some people have a low reading without symptoms, while others develop symptoms because of dehydration, illness, blood loss, heart problems or a medicine effect. Your GP may measure blood pressure more than once, compare readings lying down and standing, review your medicines, and ask about food, fluid intake and episodes of collapse. The consultation is useful because the number alone does not explain why you feel unwell.

Record when symptoms occur, particularly after standing, meals, exercise or illness. Take your medicine list and any home readings, including your position and the time of day. Follow the plan your GP gives you; it may include reviewing a medicine, treating an underlying problem, or advice about fluids and gradual position changes. Do not stop prescribed medicine or substantially change salt intake without medical guidance. Rise slowly, sit down when dizzy, and arrange review if symptoms continue.

Get urgent help after a faint if you have chest pain, severe breathlessness, a serious injury, a racing or irregular heartbeat, prolonged confusion or difficulty speaking. Seek prompt assessment for repeated fainting, black or bloody stools, heavy bleeding, severe vomiting or inability to keep fluids down. These features can signal a problem needing more than routine monitoring.

Could any of my medicines or a recent illness be lowering my blood pressure? Should it be checked while standing? What should I do at the first sign of dizziness? When should I return for review?