What's a Diabetic Coma?

Overview. A diabetic coma is a life-threatening diabetes complication that causes unconsciousness. If you have diabetes, dangerously high blood sugar (hyperglycemia) or dangerously low blood sugar (hypoglycemia) can lead to a diabetic coma.

Can a person recover from a diabetic coma?

The person will start to recover quickly after treatment starts. Most people make a full recovery. However, if they do not receive treatment soon after entering the coma, there may be long-term effects, for example, a risk of irreversible brain damage. Without treatment, the coma can be fatal.

How long does a diabetic coma last?

Diabetic ketoacidosis, if it progresses and worsens without treatment, can eventually cause unconsciousness, from a combination of a very high blood sugar level, dehydration and shock, and exhaustion. Coma only occurs at an advanced stage, usually after 36 hours or more of worsening vomiting and hyperventilation.