Hypoglycemia (Low Blood Sugar): Symptoms & Signs

Medically Reviewed on 9/10/2019

Hypoglycemia (low blood sugar) means that blood levels of glucose are too low. This condition is most commonly a complication of treatment for diabetes. Symptoms of hypoglycemia vary among people. When blood sugar levels drop, symptoms can include

These are among the early symptoms of hypoglycemia. Other possible symptoms of low blood sugar can be

If the low blood sugar levels persist, more serious symptoms develop, such as

Eventually, coma may develop.

Causes of hypoglycemia

Hypoglycemia occurs as a side effect of many treatments for type 1 or 2 diabetes. There are other rare causes for the condition, such as insulin-producing tumors (insulinomas) and certain medications.

Related Symptoms & Signs

Other hypoglycemia symptoms and signs

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Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.