Diarrhea is one of the most common health complaints. It can range from a mild, temporary condition, to a potentially life-threatening one.Diarrhea is characterized by abnormally loose or watery stools.Some people frequently pass stools, but they are of normal consistency. This is not diarrhea. Similarly, breastfed babies often pass loose, pasty stools. This is normal. It is not diarrhea.

Pneumonia is an infection of the lungs with a range of possible causes. It can be a serious and life-threatening disease. It normally starts with a bacterial, viral, or fungal infection.The lungs become inflamed, and the tiny air sacs, or alveoli, inside the lungs fill up with fluid.Pneumonia can occur in young and healthy people, but it is most dangerous for older adults, infants, people with other diseases, and those with impaired immune systems.

A common infectious disease in children is scarlet fever – it can occur repeatedly, often and not only in children. Another common disease is chicken-pox for which there is the option of vaccination. However, despite this, it is still a common occurrence. On the other hand, vaccination against measles and rubella is much greater. As a result, these diseases are much less frequent. The so-called fifth (erythema infectiosum) and sixth (roseola infantum) diseases are very similar. The fifth disease is more frequent and is characterized by a mild fever and a rash, which is often misdiagnosed as an allergic reaction. The sixth disease is more frequent and easily diagnosed: the child has high fevers for two to three days. As soon as the temperature drops, a rash occurs and never occurs along with the fever as well. These are viral diseases and are therefore not treated by antibiotics, but like all other viral diseases – by medicaments lowering the temperature and a prescribed period of calm etc.