This study aims to investigate wich symptoms and blood test characteristics acute hepatitis manifests in pediatric age. The study will be conducted because acute hepatitis is not an easily and clearly recognized disease in children. This study aims to better characterize this disease by describing the frequency of the different symptoms with which it can manifest and the changes it causes in blood tests. It also aims to assess the occurrence of any complications of pediatric acute hepatitis. The study is observational, so it is limited to collecting data and analyzing the patient's clinical course without interfering with normal clinical practice.