Hypoglycemia Symptoms

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Symptoms of hypoglycemia may vary because low blood sugar can be mild, moderate, or severe.  
In healthy people, fasting blood-glucose levels are usually between 70 and 99 mg/dL.

Mild Hypoglycemia Symptoms

Symptoms of mild hypoglycemia usually develop, when the blood-sugar level falls below 70 mg/dL. These symptoms may include:  

  • heavy hunger,
  • nausea
  • sweating, cold, clammy even without any physical activity
  • rapid heartbeat
  • trembling
  • numbness sensation

Moderate Hypoglycemia Symptoms

If the blood-glucose level falls below 55 mg/dl, the nervous symptoms will start appearing:

  • Irritability, anxiety, restlessness, or anger
  • Confusion, thinking difficulty, or concentration difficulty
  • Blurred vision, dizziness, lightheadedness or headache
  • Lack of energy, feels weak, Fatigue, lethargy, or drowsiness
  • Poor coordination and difficulty walking
  • Talking difficulty - staggering or slurred speech

Severe Hypoglycemia Symptoms

If the blood-glucose level falls below 35-40 mg/dl, it is fatal and the symptoms are.

  • Drop in body temperature.
  • Seizures or convulsions
  • Unconsciousness, coma

If emergency treatment not provided for severe hypoglycemia can cause irreversible brain damage, heart problems and can be fatal.

Hypoglycemia Symptoms during Sleep

  • crying out or having nightmares,
  • too much perspiration,
  • feeling tired, irritable, or confused after waking up
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