<unk>  symptoms are divided into two main categories. The first category is symptoms caused by low glucose in the brain, called neuroglycopenic symptoms. The second category of symptoms is caused by the body's reaction to low glucose in the brain, called adrenergic symptoms. Neuroglycopenic symptoms Adrenergic symptoms * Headache * Blurred vision * Tiredness (also called Fatigue) * Unusual behavior * Confusion * Lightheadedness * Difficulty speaking or slurred speech * Seizures * Loss of consciousness (sometimes called passing out) * Death, if severe<unk>  * Fast heart rate * Pounding heartbeat (also called Palpitations) * Sweating * Clamminess * Shakiness or tremulousness * Nervousness (also called Anxiety) * Hunger *Nausea * Pins and needles sensation * Pale skin color References: Everyone experiences different symptoms of<unk> , so someone with<unk>  may not have all of the symptoms listed above. Symptoms also tend to have quick onset. It is important to quickly obtain a blood glucose measurement in someone presenting with symptoms of<unk>  to properly identify the<unk>  episode.
Hypoglycemia
Stroke
Oxyhyperglycemia
Hepatic encephalopathy
Ketotic hypoglycemia
Drowning
Hyperinsulinemic hypoglycemia
Opioid overdose