In this final paper, the topic of infectious rashes in children of preschool age will be explained and elaborated on. Infectious diseases, including infectious rash diseases, are very common in collectives such as kindergartens, schools, and hospitals. Therefore, it is important to educate parents and teachers about the symptoms and course of the infectious diseases with rash to take the necessary preventive measures, which may include isolation of sick children from the collective (kindergarten) to prevent further infection and outbreak of the disease. The most common infectious rash diseases in preschool children that will be listed in the paper are measles, rubella, chickenpox, hand, foot, and mouth disease, erythema infectiosum, and chickenpox, caused by viruses, and scarlet fever, erysipelas, and impetigo caused by bacteria. The symptoms of infectious rash diseases which most often affect children of preschool age will be presented together with their prevention and treatment, and possible complications. The most effective method for the prevention of viral infectious rash diseases is vaccination, while isolation and hygiene are important in the prevention of viral and bacterial infectious rash infections in children. Teachers have an important role in the prevention of infectious rash diseases in kindergartens, and therefore they should be educated about infectious rash diseases to take necessary preventive measures.