The most common illness in school-aged children is the flu. It is caused by viruses that spread from one person to the next. This is why it usually strikes first in the autumn, when schools open their doors for students.

There is no cure for the flu except for rest. You can also raise your pillow when sleeping to make breathing easier and drink a lot of warm liquids. 

After your temperature drops back to normal, it is safe for you to return to school.

A flu does not require professional medical attention by itself. However, it can be a sign of another illness, such as an ear infection.

In ear infections, the symptoms of a flu are combined with a pain in one of your ears. When this happens, you should go see the doctor, who will prescribe you the correct medicine.

Vomiting and diarrhea are signs of an intestinal inflammation. When these symptoms occur, you should rest and consume a lot of sugar-rich liquids.

If the illness continues for over two days, or if you feel extremely tired or sleepy, you should go see the doctor. 

The diseases that cause intestinal inflammations can be prevented by taking care of your hygiene, especially before meals and after visiting the toilet. 

Chickenpox is an easily contagious illness that is very common for school-aged children.

The signs of chicken pox are easy to notice: the illness causes a high fever and a red, spotty rash to form on your skin. There is no cure for the illness, but it can be taken care of by resting and drinking a lot of liquids. If you have trouble breathing or feel extremely tired, you should go see the doctor. 

If your body temperature rises above 40 degrees Celsius, it is wise to go to the doctor. When the rash disappears, you are safe to return to the school. 

Rashes are also common in children. There are many kinds of different rashes, and they can be caused by many different things. Usually, they are caused by dry skin. These kinds of rashes can be taken care of by applying various lotions.

Allergic rashes are also quite common, and they can be verified with allergy tests. Rashes can also be caused by various other illnesses, which is why long-lasting rashes must always be examined by a doctor.

Allergies can cause all kinds of problems. They can result in symptoms such as stomach pain or breathing difficulties (asthma). Allergies are taken care of by avoiding the allergy-causing substances and with special medicines.