Tachycardia
Tachycardia (if your heart beats very fast, more than 100 beats per minute) can be a normal response to exercise or stress or a sign of disease.
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Wolff-Parkinson-White syndrome
Wolff-Parkinson-White syndrome (WPW) can cause episodes of fast heartbeat, or tachycardia. Learn more here about the symptoms and treatments for WPW.
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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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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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Resting heart rate
Resting heart rate is the number of times your heart beats per minute when you are at rest. Learn what's normal for heart health and how to check it.
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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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Rabies
Rabies in humans is caused by a bite or scratch from an infected animal. Learn what to do if you are bitten by an animal that may have rabies.
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Chronic fatigue syndrome (Myalgic Encephalomyelitis)
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a complicated condition characterised by ongoing, unexplained tiredness.
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Beta blockers
Beta blockers are medicines used to treat some heart and other conditions. Learn about the potential side effects, benefits and how they work.
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Opioids
Opioids are a group of medicines prescribed by doctors to treat pain. Learn about side effects, withdrawal symptoms and what to do in an overdose.
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