The symptoms of diabetes in children and adolescents are the same as those of diabetes in adults, i.e., excessive drinking, excessive eating, excessive urination and weight loss, but they also have many special features. For example, in infants under one year of age, the symptoms of polyhydramnios and polyuria are not easily detected, and the first symptoms are often crying, constant feeding, but no weight gain, malnutrition, sudden onset of sunken eye sockets and fontanels that are not easily corrected, dehydration and dry skin, and the smell of candy in the breath. 2-3 year old children have the first symptoms of increased urination at night or sudden bedwetting. Eating more is also not a necessary symptom of pediatric diabetes. Some sick children even have normal or reduced appetite, weight loss and wasting within a short period of time, manifesting as fatigue, lethargy, reduced activity, recurrent fever, cough, frequent skin boils, small wounds that do not heal easily, and girls often report itching of the vulva. If a pediatrician has any of these symptoms, he or she should consult a pediatrician to check for sugar excretion in the urine, ketone bodies, check blood sugar if necessary, and measure weight for lightness. Since diabetes in infants is not typical, it often starts with severe dehydration and ketoacidosis coma, with rapid onset and severe symptoms. The younger the child, the higher the incidence, with 74.5% of pediatric diabetes occurring in those under 5 years of age. If this is the case, you should pay more attention to whether you have pediatric diabetes and go to the hospital in time. The above are mostly manifestations of type 1 diabetes. In the past, type 1 diabetes was the main cause of diabetes in children and adolescents in China, but in the past 10-20 years, type 2 diabetes has gradually increased among children and adolescents. These children and adolescents are mostly obese and have a bad lifestyle, like to be sedentary, drink sweet drinks, like to eat meat, eat chocolate, do not like to exercise, etc. In addition to obesity, children and adolescents with type 2 diabetes have similar symptoms as adults with type 2 diabetes, such as excessive drinking, eating, urination and weight loss, fatigue and weakness, blurred vision, and skin infections, which are red, swollen, pus-filled, painful and locally hot, and do not heal easily. It is prone to gingivitis and tooth decay, etc. If you have these conditions, you should go to the hospital for treatment and check for the presence of diabetes.