Low Blood Pressure

Low blood pressure can cause dizziness, fainting, and fatigue, affecting daily life and overall well-being. Our AHPRA-accredited online doctors and medical practitioners are available 24/7 to provide expert advice and support.

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This guide does not replace professional care. In emergencies, call 000 or visit a hospital immediately.

About low blood pressure

Low blood pressure, also known as hypotension, occurs when blood pressure levels fall below the normal range, typically below 90/60 mmHg. While some individuals naturally have lower blood pressure without experiencing any issues, chronic or severe hypotension can lead to symptoms such as dizziness, fainting, blurred vision, nausea, fatigue, and difficulty concentrating. In extreme cases, dangerously low blood pressure can cause shock, which is a medical emergency requiring immediate attention. Hypotension can result from various factors, including dehydration, prolonged bed rest, heart conditions, endocrine disorders, blood loss, severe infections, or certain medications. Postural or orthostatic hypotension, a condition where blood pressure drops suddenly when standing up, is also common, particularly in older adults. Managing hypotension depends on the underlying cause and may involve dietary changes, increasing fluid and salt intake, adjusting medications, or using compression stockings to improve circulation. Consulting a doctor is essential if low blood pressure leads to persistent or severe symptoms that affect daily life.

Medically reviewed by Dr. Ammar AL-ANI, MBChB, CCBST, AMC

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    When to consult a doctor for low blood pressure?

    You should consult a GP for low blood pressure (hypotension) if you experience any of the following symptoms:

    • Frequent dizziness: Sudden drops in blood pressure can lead to falls or injuries.
    • Confusion: This may indicate inadequate blood flow to the brain.
    • Severe fatigue: Persistent low energy levels could be a sign of an underlying condition.
    • Shock symptoms: Cold, clammy skin, rapid breathing, and a weak pulse require immediate medical attention.
    • Sudden drop in blood pressure: If your blood pressure falls significantly after standing up or eating.
    • Persistent low readings: If your blood pressure remains consistently low and affects daily activities.

    What are the common symptoms of low blood pressure?

    Mild cases of hypotension may not cause symptoms, but when blood pressure drops too low, it can result in:

    • Dizziness or light-headedness
    • Fainting
    • Blurred vision
    • Fatigue and weakness
    • Nausea
    • Difficulty concentrating
    • Shock (in extreme cases), leading to rapid breathing and confusion

    What are the causes of low blood pressure?

    Low blood pressure can be triggered by various factors, including:

    • Dehydration: Lack of fluids can reduce blood volume, leading to lower blood pressure.
    • Heart conditions: Issues like heart failure, bradycardia (slow heart rate), or valve problems can contribute to hypotension.
    • Endocrine disorders: Conditions like hypothyroidism, adrenal insufficiency, or diabetes can affect blood pressure regulation.
    • Medications: Some drugs, including beta-blockers, diuretics, and antidepressants, can lower blood pressure.
    • Nutritional deficiencies: A lack of vitamin B12 or folate can lead to anaemia, reducing blood pressure.
    • Blood loss or severe infection: Losing a significant amount of blood or developing a severe infection can lead to dangerously low blood pressure.
    • Postural hypotension: A sudden drop in blood pressure when standing up, causing dizziness or light headedness.

    How to manage low blood pressure?

    If hypotension is causing symptoms, here are some ways to manage it:

    • Stay hydrated: Drink plenty of fluids, especially water, to maintain blood volume.
    • Increase salt intake (If recommended by a doctor): In some cases, more sodium can help raise blood pressure.
    • Eat small frequent meals: Large meals can cause postprandial hypotension (a drop in blood pressure after eating).
    • Avoid sudden position changes: Stand up slowly to prevent dizziness from postural hypotension.
    • Wear compression stockings: These helps prevent blood from pooling in the legs.
    • Review medications: Some drugs may need adjustment if they are contributing to low blood pressure.

    What is the difference between hypertension and hypotension?

    Hypertension (high blood pressure) and hypotension (low blood pressure) differ primarily in their impact on circulation and overall health. Hypertension is defined as blood pressure consistently above 140/90 mmHg, often caused by factors such as obesity, high salt intake, stress, genetics, kidney disease, and lack of exercise.

    On the other hand, hypotension is diagnosed when blood pressure remains below 90/60 mmHg and may result from dehydration, heart conditions, endocrine disorders, medications, or blood loss. Both conditions require medical monitoring and can be effectively managed through telehealth consultations, ensuring early detection and proper treatment.

    Can I get access to an after-hours doctor for low blood pressure?

    Yes, you can access an after-hours online doctor for low blood pressure through telehealth services like Hola Health. Hypotension can cause symptoms such as dizziness, fainting, and fatigue, which may require urgent medical advice outside of regular clinic hours.

    With 24/7 telehealth services, you can consult a licensed AHPRA-accredited doctor anytime, including weekends, public holidays, and late at night. The online doctor can assess your symptoms, recommend lifestyle adjustments, prescribe medications if necessary, and advise on further testing or referrals.

    If your symptoms are severe—such as loss of consciousness, chest pain, or signs of shock—it’s important to seek emergency medical care immediately.

    How can I speak to an online doctor through Hola Health?

    Speaking to an online doctor through Hola Health is a simple and efficient process:

    • Visit the Hola Health website: Through telehealth appointment, select the consultation type you need.
    • Complete an online form: Provide details about your symptoms, medical history, and any medications you’re taking.
    • Connect with an AHPRA-licensed doctor: Your telehealth appointment will be conducted via video call within 15 minutes. The doctor will assess your condition and provide treatment recommendations, prescriptions, or referrals if necessary.
    • Receive your documents: If required, you can get eScripts, medical certificates, or referrals sent directly to your email or phone via SMS.

    Will I get a sick certificate online for low blood pressure?

    Yes, if your low blood pressure is affecting your ability to work or study, you can request a sick certificate online. The health practitioner or doctor will assess your symptoms and determine if a sick leave certificate is necessary. Common reasons for needing a medical certificate for low blood pressure include:

    • Frequent dizziness or fainting that makes it unsafe to work or commute.
    • Fatigue or weakness affecting productivity.
    • Low energy levels making it difficult to concentrate on tasks.
    • Medication side effects causing drowsiness or instability.

    Once approved, your medical certificate will be sent digitally to your email, allowing you to submit it to your employer or educational institution without needing an in-person visit.

    How can I get an online prescription for low blood pressure?

    You can get an online prescription for low blood pressure through a telehealth consultation with Hola Health. While many cases of mild hypotension can be managed through lifestyle changes, some individuals may require medications. Steps to get an online prescription:

    • Book a telehealth appointment: Choose a 24/7 online GP consultation for instant scripts.
    • Describe your symptoms: The doctor will assess whether medication is needed.
    • Receive your eScript: If appropriate, the doctor will issue a digital prescription via SMS or email.
    • Fill your prescription: Collect your medication at a local pharmacy or opt for home delivery through an online pharmacy service.

    What kind of referrals can I get online for low blood pressure?

    If your low blood pressure symptoms require further evaluation, you can receive an online referral for:

    • Blood tests & pathology referrals: To check for anaemia, thyroid disorders, electrolyte imbalances, and other underlying causes of hypotension.
    • Specialist referrals: If your doctor suspects that an underlying health condition is causing your low blood pressure, they may refer you to a specialist for further investigation.

    How can we help?

    Instantly connect with an AHPRA-accredited online doctor through 24/7 telehealth services for fast and convenient healthcare. Here’s how telehealth simplifies access to medical support:

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    Instantly connect to a registered practitioner within 15 minutes from anywhere in Australia, 24/7 for:

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    • General consults
    • New & repeat scripts
    • Referrals
    • Medical certificates
    • Mental health plans

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