The symptoms of diabetic ketoacidosis include the following: first, the gastrointestinal manifestations. Some patients present with acute GI symptoms, such as severe abdominal pain or nausea and vomiting. Nausea and vomiting is the most common symptom of diabetic ketoacidosis and should be distinguished from acute gastroenteritis. Next, respiratory symptoms. Patients will show deep and large breathing, and the body is in a state of acidosis is related. Once again, if the patient is in a serious condition, he or she will also show changes in mental status, such as coma and malignant unconsciousness. Finally, the mucous membrane of the skin is dry and the elasticity of the skin is poor, which is related to the severe dehydration in the body.