Final answer:
Common reasons for hospitalization in children are communicable diseases, with asthma being the most frequent cause. Conditions like gastroenteritis are also notable, as well as severe mental health disorders such as anorexia nervosa.
Step-by-step explanation:
The common reasons children are hospitalized include communicable diseases and various health issues that can be serious enough to require medical care. Asthma, a condition affecting the respiratory system, is particularly significant as it is the most frequent cause of hospitalization in children. Gastroenteritis is also more common in children than in adults, which can lead to hospitalization, especially if not managed properly with hygiene, nutrition, and vaccination. Additionally, mental health disorders such as anorexia nervosa can lead to severe health consequences and require hospitalization for treatment.