Symptoms of high blood sugar or low blood sugar usually develop before a diabetic coma. High blood sugar (hyperglycemia) If your blood sugar level is too high, you may have:  Increased thirst Frequent urination Blurred vision Tiredness or weakness Headache Nausea and vomiting Shortness of breath Stomach pain Fruity breath odor A very dry mouth  Low blood sugar (hypoglycemia) If your blood sugar is too low, you may have:  Shakiness Anxiety Tiredness or drowsiness Weakness Sweating Hunger A feeling of tingling on your skin Dizziness or lightheadedness Headache Difficulty speaking Blurry vision Confusion Loss of consciousness  Some people, especially those who've had diabetes for a long time, develop a condition known as hypoglycemia unawareness. That means they don't have warning symptoms that signal a drop in blood sugar. If you have any symptoms of high or low blood sugar, test your blood sugar right away. Based on the test results, follow your diabetes treatment. If you don't start to feel better quickly, or you start to feel worse, get medical care right away.
symptoms high blood sugar low blood sugar develop diabetic coma  high blood sugar (hyperglycemia) blood sugar level high  may have:  increased thirst frequent urination blurred vision tiredness weakness headache nausea vomiting shortness breath stomach pain fruity breath odor dry mouth  low blood sugar (hypoglycemia) blood sugar low  may have:  shakiness anxiety tiredness drowsiness weakness sweating hunger feeling tingling skin dizziness lightheadedness headache difficulty speaking blurry vision confusion loss consciousness  people  especially who've diabetes long time  develop condition known hypoglycemia unawareness  means don't warning symptoms signal drop blood sugar  symptoms high low blood sugar  test blood sugar right away  based test results  follow diabetes treatment  don't start feel quickly  start feel worse  medical care right away
diabetic coma