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  • Low Blood Pressure — Symptoms, Home Treatment & When to Worry

    Low blood pressure — hypotension — is generally defined as readings below 90/60 mmHg, though healthy adults may normally run lower. For some people, low blood pressure is harmless or even protective. For others, it causes dizziness, fainting, and fatigue that disrupt daily life. Understanding the cause determines whether simple home measures are enough or medical evaluation is needed.

    Common Causes

    • Dehydration — the most common and easily corrected cause, especially in hot climates
    • Orthostatic hypotension — blood pressure drops when standing up quickly
    • Medications — blood pressure drugs, diuretics, antidepressants, and Parkinson’s medications
    • Heart conditions — bradycardia, heart valve disease, or heart failure reducing cardiac output
    • Endocrine disorders — adrenal insufficiency, hypothyroidism, or diabetes-related autonomic neuropathy
    • Severe infection (sepsis) — dangerous drop in blood pressure during systemic infection
    • Significant blood loss — from injury, internal bleeding, or heavy menstruation
    • Pregnancy — normal physiological drop in the first and second trimesters
    • Prolonged bed rest — deconditioning of cardiovascular reflexes

    Recognising Symptoms

    • Dizziness or lightheadedness, especially on standing
    • Fainting (syncope) or near-fainting episodes
    • Blurred vision or tunnel vision when upright
    • Fatigue and difficulty concentrating
    • Nausea and cold, clammy skin
    • Rapid or weak pulse

    Home Treatment Steps

    Safe self-care for mild hypotension
    1
    Increase fluid intake
    Drink 2–3 litres of water daily — more in heat or during illness. Oral rehydration solution helps if you have been vomiting or sweating heavily.
    2
    Add dietary salt cautiously
    Slightly increasing salt intake can raise blood pressure in some people — but only if your doctor confirms it is safe. Avoid this if you have kidney disease or heart failure.
    3
    Stand up slowly
    Sit on the edge of the bed for 30 seconds before standing. Rise from chairs gradually. Flex calf muscles before getting up to push blood toward the brain.
    4
    Wear compression stockings
    Knee-high or thigh-high compression stockings reduce blood pooling in the legs and help maintain blood pressure when standing.
    5
    Eat smaller, frequent meals
    Large meals divert blood to the digestive system and can cause postprandial hypotension. Eat smaller portions more often.
    6
    Lie down if dizzy
    If you feel faint, lie flat and elevate legs above heart level. Do not drive or operate machinery until symptoms fully resolve.

    When to See a Doctor

    • Repeated fainting episodes or falls
    • Systolic BP consistently below 90 mmHg with symptoms
    • Hypotension with chest pain, shortness of breath, or irregular heartbeat
    • Sudden onset of low BP during fever or infection
    • Confusion, cold extremities, or reduced urine output — possible shock
    • New hypotension after starting or changing medications
    • Symptoms persist despite hydration and lifestyle changes

    Frequently Asked Questions

    Is low blood pressure always dangerous?

    No. Many healthy, active people — especially young adults and athletes — have naturally low readings without symptoms. Treatment is needed only when low BP causes symptoms or signals an underlying condition.

    Can low blood pressure cause headaches?

    Yes, though less commonly than high blood pressure. Dizziness and fatigue are more typical. Persistent headaches with low BP readings warrant medical evaluation to rule out other causes.

    Should I stop my blood pressure medication if readings are too low?

    Never adjust or stop prescribed medication without consulting your doctor. They may reduce the dose or change the timing rather than stopping entirely.

    What is orthostatic hypotension?

    A drop of at least 20 mmHg systolic or 10 mmHg diastolic within 3 minutes of standing. It is common in older adults and those on BP medications. Home management focuses on slow position changes, hydration, and compression stockings.

    This article is for general educational purposes only and is not a substitute for professional medical advice. Always consult a qualified healthcare provider for your specific situation. Last reviewed: December 2025. Read our full Medical Disclaimer.