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Arrhythmias

Arrhythmias are abnormal heart rhythms, which can prevent the heart pumping efficiently. This page from Great Ormond Street Hospital (GOSH) explains how the heart beats normally, what happens when it starts to beat abnormally and how it can be treated.

Arthritis

Arthritis is a painful condition that affects the joints and bones. The tissue lining the joints, like elbows and knuckles, becomes inflamed, making them stiff and swollen.

Arthritis

Arthritis is a painful condition that affects the joints and bones, and can make it difficult for you to move around. You might think it just affects older people, but young people can experience it too. The tissue lining the joints, like elbows and knuckles, becomes inflamed, making them stiff and swollen.

Asthma

Asthma is a condition that affects the small airways of the lungs (bronchi), making them red, swollen and sensitive. These sensitive or hyper-responsive airways can react badly to certain ‘triggers’ such as catching a cold, exercise, cigarette smoke, house dust mites, pets and pollen.