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