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2.8 Symptoms of High or Low Blood Sugar
Being aware of the symptoms of high or low blood sugar can help you understand your test results and
decide what to do if they seem unusual. Here are the most common symptoms:
• High blood sugar (hyperglycemia): fatigue, increased appetite or thirst, frequent urination, blurred vision,
headache, or general aching.
• Low blood sugar (hypoglycemia): sweating, trembling, blurred vision, rapid heartbeat, tingling, or
numbness around mouth or ngertips.
w WARNINGS:
• If you are experiencing any of these symptoms, test your blood sugar. If your blood sugar result is
displayed as LO or HI, contact your healthcare professional immediately.
• The meter is designed to display blood sugar results from 10 to 600 mg/dL. If a result below
10 mg/dL or over 600 mg/dL appears on the display, call ACCU‑CHEK Customer Care Service
Center at 1‑800‑688‑4578.
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