The High-Sugar Alert: 12 Signs Your Blood Glucose May Be Too High
High blood sugar (hyperglycemia) can cause noticeable symptoms, but it can also develop with few or no symptoms, particularly in type 2 diabetes. These signs don’t prove that your blood sugar is high—testing is needed to know for sure.
12 symptoms to watch for
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Increased thirst — feeling unusually thirsty can occur as the body loses more water through urination.
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Frequent urination — excess glucose in the blood can increase the amount of urine produced.
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Dry mouth — fluid loss can contribute to a persistently dry mouth.
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Increased hunger — diabetes can interfere with the body’s ability to use glucose effectively.
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Unexplained weight loss — particularly when blood glucose is very high or insulin is insufficient.
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Unusual fatigue or weakness — high glucose can be accompanied by significant tiredness.
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Blurred vision — elevated glucose can temporarily affect vision.
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Headaches — headaches can occur alongside high blood glucose, although they have many other possible causes.
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Slow-healing cuts or sores — diabetes can impair healing.
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Frequent infections — recurrent urinary, skin, or yeast infections can be associated with diabetes.
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Tingling or numbness in the hands or feet — this can occur with diabetes-related nerve damage, particularly after prolonged high blood glucose.
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Difficulty concentrating or feeling confused — very high blood glucose can affect mental function and can become an emergency when severe
