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Croup

life science Maturity 11-13 Next article →

Croup is a common respiratory infection that affects many children. It is usually caused by a virus. This infection leads to swelling inside the trachea, which is the windpipe. The swelling makes it harder for air to move through the throat. This can cause a person to work much harder to breathe. Most cases are mild and can be treated at home. However, about one to five percent of children may need to stay in a hospital.

When the infection happens, the body sends white blood cells to the area. These cells, like lymphocytes and neutrophils, help fight the virus. This process causes the larynx and trachea to swell up. This swelling creates a narrow path for air. As air tries to squeeze through the tight space, it makes a noisy sound called stridor. This sound is often heard when a child breathes in. The cough from croup often sounds like a sea lion barking.

People have known about croup for a very long time. The word comes from an old English verb meaning to cry hoarsely. In ancient Greece, people knew about croup caused by diphtheria. In 1765, a doctor named Francis Home wrote a famous book about it. Later, in 1826, a person named Bretonneau showed that viral croup is different from diphtheria. Today, we know that many different viruses can cause the condition.

Croup affects about 15% of children at some point in their lives. It most often happens to children between six months and five years old. It is also slightly more common in males than in females. You might notice more cases during the autumn months. Doctors often use the Westley score to see how severe the sickness is. This score looks at things like breathing sounds and how the chest moves. Most children feel much better within one or two days.

Many things we do every day can help prevent or treat croup. Washing your hands is a great way to stop germs from spreading. We also have vaccines that prevent influenza and diphtheria. These shots help keep many children safe from serious versions of the illness. If a child has croup, they should rest and drink plenty of fluids. Doctors might give a single dose of steroids to help stop the swelling. These medicines can start working in as little as two hours.

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