Hypoglycemia generally refers to the occurrence of a hypoglycemic reaction, there may be panic, cold extremities, pallor and other symptoms, need to be given in time to sugary foods or intravenous glucose infusion treatment; low blood sugar includes hypoglycemia, the range is greater, and does not necessarily appear to be a symptom of hypoglycemic reaction. 1. Hypoglycemia: a pathological state, generally refers to the occurrence of hypoglycemic reaction, mainly manifested as panic, cold limbs, pale face, chest tightness, hand shaking, cold sweat, severe cases will appear changes in mental state, coma, impaired consciousness, if you do not supplement the sugar in a timely manner, it may lead to irreversible damage to the brain, or even death. When hypoglycemia occurs, you should eat or drink sugar water in time, and if the condition is serious, it can be corrected by intravenous glucose injection. 2. Low blood glucose: refers to the relatively low blood glucose value, which can include the category of hypoglycemia, but also includes blood glucose in the normal range but in a lower state, not necessarily the symptoms of hypoglycemic reaction. In short, in the case of hypoglycemia or low blood glucose, it is necessary to consult a doctor in time to clarify the cause and treat the symptoms.