Low blood pressure (hypotension)
Low blood pressure (hypotension) can have serious causes, and can also be caused by medicines and dehydration. Read about the symptoms and treatments.
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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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Cholera
Cholera is an illness that gives you severe diarrhoea and dehydration. It’s mostly found in parts of the world with poor water and sanitation.
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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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Melatonin
Melatonin is a hormone that is naturally made in your body. It helps to control how and when you sleep. It can be taken as a medicine if you have sleep problems.
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Wernicke encephalopathy
Wernicke encephalopathy is a type of brain injury that needs quick treatment to avoid permanent brain damage. Find out about its causes and symptoms.
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What is a healthy blood pressure?
A healthy or normal blood pressure is less than 130mmHg over 85mmHg. Discover more about blood pressure, how often it’s checked and how to measure it.
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Ebola virus
Ebola virus disease is a rare but often fatal illness. Find out more about Ebola transmission (spread), symptoms and treatment options.
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Circulatory system
The circulatory system includes the blood, heart and blood vessels. It moves oxygen and nutrients around the body and removes carbon dioxide to help keep your body cells healthy.
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Spinal cord injuries
A spinal cord injury is damage to the spinal cord that can make you lose feeling, movement, or both. Learn about causes and effects.
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