What are the manifestations of hypoglycemia? The manifestations of hypoglycemia can be various, and each person can have great differences. Most diabetic patients have experienced hypoglycemia, and patients should master the characteristics of their performance when they have hypoglycemia. 1.The general symptoms of hypoglycemia include sympathetic excitation symptoms (panic, hand trembling, sweating, hunger, headache, blurred vision, etc.) and mental symptoms (fogginess, talkative, answering incoherent questions, mental agitation, unconsciousness, coma, etc.). 2.Mild hypoglycemic reaction mainly manifests as sweating, palpitation, pale face, hand trembling, hunger, weakness, emotional and behavioral changes (such as children crying, irritability, excessive naughtiness), inattention and uncoordinated movements. 3. In addition to the above symptoms, moderate hypoglycemic reaction is also accompanied by inability to take care of oneself, difficulty in eating and drinking, indifferent expression, dizziness, trance, headache, abdominal pain, nausea and so on. If moderate hypoglycemic reaction is not treated in time, it may gradually develop into severe hypoglycemia, which may manifest as inability to stand, no response to the surrounding, disorientation, inability to eat and drink (may accidentally aspirate human lungs and risk of suffocation), limb and facial spasm, and even coma. Generally when the blood sugar is lower than 3.9mmol/L, patients will gradually appear various symptoms of hypoglycemia, and the symptoms will become more and more serious as the blood sugar further decreases, but there are some patients who have adapted to this state due to frequent hypoglycemia or due to the complication of vegetative neuropathy, even when the blood sugar concentration has been significantly lower than 3.9mmol/L, there are no very obvious palpitations, hand trembling, hunger This is because this group of patients is more prone to danger. This part of patients is more likely to be dangerous because there is no obvious prodromal symptom, and the patients will enter into the period of consciousness and coma directly. What are the main dangers of hypoglycemia? The danger of hyperglycemia occurs gradually over a long period of time and does not affect life temporarily, while the danger of hypoglycemia is rapid and can be life-threatening. A diabetologist once said that “the harm of one hypoglycemia may offset the benefits of a lifetime of blood sugar control”. The main hazards are: 1. Hypoglycemia increases the secretion of insulin counteracting hormones (such as adrenaline, glucocorticoid, glucagon and growth hormone), causing rebound hyperglycemia, resulting in metabolic disorders of diabetes that cannot be easily controlled. 2. Hypoglycemia reduces the energy supply of brain cells, leading to necrosis of brain cells and brain softening, which in turn causes acute cerebrovascular diseases such as cerebral infarction. If the coma of hypoglycemia lasts more than 6h, the brain damage will be irreversible. 3. Hypoglycemia will reduce the energy supply and oxygen supply of the heart, which will easily lead to arrhythmia and insufficient blood supply to the heart muscle and induce myocardial infarction. Therefore, every diabetic patient should understand the danger of hypoglycemia, and identify and prevent it.