Diabetes mellitus is a group of metabolic diseases characterized by hyperglycemia due to defective insulin secretion and/or impaired insulin action. Diabetes mellitus symptoms Typical symptoms: three symptoms of excess and one symptom of deficiency, i.e. drinking more, eating more, urinating more and losing weight. Atypical symptoms: only dizziness, weakness, etc., or even no symptoms; early in the onset, some patients may have symptoms of hypoglycemia before lunch or dinner. Diabetic complications Continuous hyperglycemia and long-term metabolic disorders can lead to damage to the tissues and organs of the whole body, especially the eyes, kidneys, cardiovascular and nervous system, as well as their dysfunction and failure. In severe cases, it may cause water-electrolyte disorders and acid-base balance disorders, and emergencies such as ketoacidosis and hyperosmolar coma. Specific manifestations are as follows: acute complications: under stress and other conditions, the condition is aggravated, and loss of appetite, nausea, vomiting, abdominal pain, dizziness, drowsiness, blurred vision, respiratory distress, coma, etc. may occur. The main manifestations of chronic complications: ① Diabetic retinopathy: vision loss, etc. ②Diabetic nephropathy: swelling, increased foam in the urine or proteinuria. ③Diabetic neuropathy: abnormal skin sensation in the extremities, numbness, pins and needles, ankle sensation, feeling of stepping on cotton on the soles of the feet, alternating diarrhea and constipation, urinary retention, hemiplegia or occasional profuse sweating, sexual dysfunction, etc. ④ Recurrent infections: for example, recurrent skin infections such as boils and carbuncles, long-lasting calf and foot ulcers; recurrent urinary tract infections; rapidly developing tuberculosis; female vulvar itching, etc. Summary Diabetes is not only high blood sugar, poor blood sugar control can bring serious complications and seriously affect the quality of life; long-term control of blood sugar to stay away from the threat of complications; timely monitoring of blood sugar and timely adjustment of hypoglycemic drugs will help blood sugar to reach the full standard.