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    Several fasting glucose levels over 125 or single random glucose over 200 mg are considered diagnostic of diabetes. About 30 percent of patients with frank diabetes for more than a decade have some neuropathy. It usually presents as numbness, itching or tingling in the legs but can also be pains.

    Why does high blood sugar damage nerves? Damage to nerves and blood vessels. Prolonged exposure to high blood sugar can damage delicate nerve fibers, causing diabetic neuropathy. It also weakens the walls of the small blood vessels (capillaries) that supply the nerves with oxygen and nutrients.


    For me, high blood sugar makes everything worse. Likely because I imagine the blood is like forcing syrup through things that normally have a consistency of water. Now my numbers are great. I have been able to control with diet and weight loss. Unfortunately, I have major pain, tingling, migraines, muscle spasm and more on a daily basis due to fibromyalgia. I often wonder how I would know if I had neuropathy.

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