Diabetic ketoacidosis is a clinical syndrome characterized by hyperglycemia, high blood ketones and metabolic acidosis. Diabetic ketoacidosis is an acute complication of diabetes mellitus due to insufficient insulin and inappropriate elevation of glucagon, which causes disorders of sugar, fat and protein metabolism, resulting in imbalance of water, electrolyte and acid-base balance. Clinical manifestations: diabetic ketoacidosis occurs mainly with loss of appetite, nausea, vomiting, drowsiness, deep and fast breathing, and the smell of rotten apples in the exhaled breath, with the progression of the disease, there can be a serious loss of water, decrease in urine output, drop in blood pressure, cold limbs (cold limbs, or even cold to the elbows and above the knees), and even coma. Commonly used treatments: insulin therapy; rehydration; correction of electrolyte disorders; correction of acidosis. If you find diabetic acidosis, you must go to the hospital in time to avoid delay.