General medical conditions

Use the search box to learn about general medical conditions that affect children and young people.

Click here for information about specialist medical conditions, which are treated at Great Ormond Street Hospital.

Acne

Lots of teenagers experience acne. It’s a very common skin condition among 12 to 15 year olds. It affects the hair follicles in your skin, mainly on the face, chest and back.

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Anaemia

Anaemia is a very common condition where the number of red blood cells or the amount of haemoglobin in red blood cells is less than normal. Iron deficiency anaemia is a specific type of anaemia caused by a lack of the mineral iron in the body. Iron is imp

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Appendicitis and removal of the appendix

The appendix is a small pouch joined to the large intestine at a point called the caecum. Appendicitis is inflammation and infection of the appendix. This information from Great Ormond Street Hospital (GOSH) explains the causes, symptoms and treatment of

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Attention deficit hyperactivity disorder (ADHD)

It is common for children to be highly active, especially at younger ages. In most cases, this is normal behaviour and they will gradually grow out of it. However, for some children, there could be an underlying difficulty, such as attention deficit hyper

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Birthmarks

A birthmark is a mark on the skin that is either present at birth or develops in the first few weeks of life. Birthmarks are very common and most types do not require any treatment at all. This information sheet from Great Ormond Street Hospital (GOSH) de

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