Hypoglycemia Symptoms

Shakiness
jerky movements
Dizziness
Seizure
Sweating
Hunger
Headache
Perspiration
Difficulty speaking
Difficulty paying attention
Pale skin color
Tingling sensations around the mouth
Feeling anxious or weak
Certain times, due to insulin, diabetic oral drug, alcohol etc your blood sugar level might decrease, while you are sleeping. You can identify it by following symptoms.

Cry out or have nightmares
Find that your pants or sheets are damp from perspiration
Feel tired, irritable, or confused when you wake up