Heart palpitations

When you have palpitations you are suddenly aware of your heartbeat. Read about the causes, related symptoms and what to do if you have palpitations.

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Brugada syndrome

Brugada syndrome can disrupt your heart rhythm, causing palpitations, fainting or in serious cases, cardiac arrest. Read about symptoms and treatment.

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Hyperthyroidism

Hyperthyroidism (or thyrotoxicosis) occurs when the thyroid gland is overactive and produces too much thyroid hormone.

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Cardiomyopathy

Cardiomyopathy is a condition that affects your heart muscle. Find out about the different types of cardiomyopathy, symptoms and treatments.

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External cardioversion

An external cardioversion is a procedure to treat an abnormal heart rhythm. It involves connecting you to a defibrillator machine that gives a controlled electric shock to make your heart beat normally again.

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Vitamin B deficiency

Vitamin B deficiency can happen when you don’t get enough of the right nutrients. Learn about the symptoms of vitamin B deficiency.

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Calcium channel blockers (CCB)

Find out what the most common types of calcium channel blockers are used for, how they work and any side effects associated with taking them.

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Tachycardia

Tachycardia (if your heart beats faster than usual, more than 100 beats per minute) can be a normal response to exercise or stress or a sign of disease

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Potassium deficiency

Potassium is a mineral that helps nerves and muscles function properly. Read more about potassium deficiency, symptoms, diagnosis and causes.

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Pericarditis

Pericarditis is the inflammation of the thin membrane around your heart. Read more about pericarditis symptoms, treatments and causes.

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Thyroid gland

Your thyroid gland sits in the front of your neck and helps control your metabolism. Read about the different thyroid hormones and thyroid problems.

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Thyroid problems

If your thyroid becomes overactive (hyperthyroidism) or underactive (hypothyroidism), you may experience a range of health problems — learn more here.

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Pulmonary hypertension

Find out all about pulmonary hypertension, a condition caused by changes to the arteries in your lungs that can damage your heart.

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Diuretic medicines

Find out what diuretic medicine is used for, how it works, the most common diuretics and any side effects associated with taking it.

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Potassium and your health

Potassium is a mineral that your body needs so nerves and muscles function well. Read more on the signs of having too much or too little potassium.

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Primary aldosteronism

Primary aldosteronism is a condition where you make too much of the hormone aldosterone — find out about the symptoms, causes and treatments.

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Ciguatera poisoning

Ciguatera poisoning only comes from certain fish from warm waters and can cause severe complications. Read on for management and prevention advice.

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Generalised anxiety disorder (GAD)

Generalised anxiety disorder (GAD) is a type of anxiety disorder characterised by persistent worry that impacts on day-to-day life.

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Inserting a pacemaker

An abnormal heart rhythm can cause cardiac arrest and even death. Having a pacemaker inserted may save your life by preventing you from having a cardiac arrest.

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Vaping

Vaping can cause harm to your health. There are laws in place about buying vapes and where you can use them. Learn more.

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Anaemia

Anaemia is a lack of red blood cells, which carry oxygen from the lungs around the body. It's important treat the cause of the anaemia.

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Fainting

Fainting is a temporary loss of consciousness when the blood flow to the brain is reduced. See your doctor if you faint, especially the first time.

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Collapsing

Collapsing has a range of causes, often occurring because of fainting. Find out about the causes of collapse and what to do if someone collapses.

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Adrenaline

Adrenaline (epinephrine) is a natural stress hormone. It is also a medicine used in an emergency for severe allergic reactions (anaphylaxis).

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Signs of mental health issues

Your mental health includes your emotional, psychological, and social well-being. Learn to recognise signs of a mental health issue.

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Blackouts

A blackout is a temporary loss of consciousness. It can be caused by fainting, or a more serious issue. Learn more about blackout treatments here.

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Postural orthostatic tachycardia syndrome (POTS)

Postural orthostatic tachycardia syndrome (POTS) causes a fast heartbeat and other symptoms when you stand up. Learn how to manage POTS.

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Autoimmune diseases — an overview

Autoimmune diseases occur when your immune system attacks your own body. Learn more about the diagnosis and treatment of these diseases.

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Cardiac arrest

Cardiac arrest is when the heart stops beating, usually due to an electrical problem with the heart. Performing CPR and defibrillation in time can be lifesaving.

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Rheumatic heart disease

Rheumatic heart disease is when your heart valves are damaged by rheumatic fever. Learn more about how this can be prevented and treated.

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