Fever

Here you can find information about diseases, symptoms, and health related to fever.

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Picture of Philipp Skafte-Holm
Philipp Skafte-Holm

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Bjarne Lühr Hansen
Bjarne Lühr Hansen

Praktiserende læge, ph.d.

Last edited on March 20, 2026

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Diseases

Chickenpox

Chickenpox is a highly contagious childhood disease you only have once in a lifetime. Chickenpox appears as fever and a rash consisting of spots, blisters and

Common Cold

A common cold can, with small children, cause rise in temperature up to 40ºC. By raising the bedhead and use nose drops you can prevent the cold from

Croup

Croup is indicated by hoarseness and a dry barking cough that sounds just like a sea lion. A common illness with children less than 7 years old. The cough has

Diarrhoea and Vomiting

Fever, diarrhoea and vomiting indicate a gastrointestinal infection. Give the child plenty of fluid with salt, sugar and lactic acid bacteria. If the child is

Fever

Fever is not dangerous; if the child’s general condition is good. A child with fever should be undressed and have plenty of fluid. You should call the doctor

Fever Cramps

Fever cramps is a shocking experience to most parents. A child with fever cramps is unconscious. At first, the child’s body gets stiff and later on fast

Hand, Foot and Moouth Disease

Hand, foot and mouth disease is a mild viral infection. The child has blisters on hands, feet and in the mouth. Some children have a light fever, headache and

Infectious Mononucleousis (Mono)

Mono is caused by a viral infection and appears especially with children less than 5 years old. Far most parents do not even know that their child has mono

Inflammation of the Middle Ear

In most cases of inflammation of the middle ear, you do not have to treat your child with penicillin. You can help your child by using a decongestant, raise

Influenza

Influenza begins with a rise in temperature and pains everywhere. The fever disappears in 3 to 4 days. If your child is drowsy or has trouble breathing, you

Meningitis

Meningitis is a serious but rare infection with children. High fever, headache, neck pains and stiffness in the neck or back together with little dot-shaped

Pneumonia

Pneumonia especially occurs during the winter. Coughing, fever and troubled breathing are typical symptoms of pneumonia. All children – except for infants less

Scarlet Fever

Scarlet fever consists of tonsillitis, a rash and raspberry tongue. The child can only have the rash once in a lifetime. Scarlet fever begins with sudden high

Slapped Cheek Syndrome

A mild children’s disease you only contract once in a lifetime.

Teething

Teething is not a disease. The child will have its first milk tooth when it is 4 to 8 months old and the last tooth will have erupted when it is about 3 years

Three-Day Fever

A mild childhood disease you only contract once in a lifetime. After three days of fever, the child gets a rash. If your child is drowsy, you must call the

Tick Bite

A tick can transfer the bacteria Borrelia to your child. Therefore the tick must be removed instantly. You can remove the tick by yourself. Contact the doctor

Tonsillitis

Most cases of tonsillitis are viral and should not be treated with penicillin. Some cases of tonsillitis are bacterial, for example Scarlet Fever and should be

Urinary Tract Infection

Children less than one year old are particularly often struck with urinary tract infection. The typical symptoms are prolonged fever, lack of appetite,

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