Hypoglycemia is a symptom of people with diabetes Type I and Type II. It occurs when people have too little sugar, or glucose, in their blood. While this often is the result of medication from diabetes, hypoglycemia has many different causes and can affect anyone. Those with this disorder present with low blood sugar. This can be temporary and easily fixed by protein or food. In some cases, people who have been fasting can develop low blood sugar. Often, this is quickly cured by protein.