The concentration of glucose in the blood of healthy individuals is in the range of 60-140 mg / dl. When it reaches a value of less than 55-65 mg / dl (3.0-3.5 mmol / l), deteriorating mood and symptoms of low blood sugar (hypoglycemia). In some patients, especially with poorly controlled diabetes and accustomed to higher concentrations of glucose symptoms of hypoglycaemia may occur at higher concentrations it.
Occurrence of hypoglycemia are at risk of all patients treated with insulin, and patients with type 2 diabetes taking oral antidiabetic drugs (belonging to the sulphonylurea group). The most common symptoms of low blood sugar include shaking, sweating, tingling around the mouth and tongue, hunger, palpitations, headache sometimes. These are warning signs, informing the patient of the impending danger. If during this time will not take the appropriate action can lead to brain dysfunction, cognitive impairment, increasing confusion, a variety of neurological and behavior, and ultimately - loss of consciousness accompanied by convulsions. People with severe hypoglycemia, which lost consciousness, should be hospitalized as soon as possible. Usually, there is no brain damage or death, because the concentration of glucose increases with the disappearance of insulin action.
A particularly important issue is the lack of awareness of hypoglycemia, or lack of ability to feel the warning signs. This means that the first sign of too low a level of sugar in the loss of consciousness. Fortunately, this phenomenon is reversible. You can "teach" the body properly experience hypoglycemia, avoiding even minor hypoglycemia.
An important issue is the hypoglycemia occurring at night, which happens much more frequently than is generally believed. The only way to detect them are measurements of the level of sugar in the meter at night.
Causes of hypoglycemia may be different. The most common are failing to comply with the current needs of the body dose of insulin or oral medications (too large a dose of insulin before a meal, omission meal or eating too little servings of carbohydrates, exercise, not included in the plan of treatment). You should also pay attention to alcohol, which can cause hypoglycemia and deepen.