This degeneration is what causes the nerves to be less effective.Įlectrodiagnostic testing in the form of nerve conduction studies (NCS) are a sensitive way of detecting the development of diabetic neuropathy. When the blood sugar level is higher than normal for an extended period of time, the blood vessels and nerves start to degenerate. This greatly increases the risk of severe tissue injury because the patient can no longer detect pain to let them know they are injured.ĭecreased blood flow and increased blood sugar level are the causes of diabetic neuropathy. In the last stage, all pain sensation is lost to an area. In later stages, the pain is more intense and constant. First one may experience intermittent pain and tingling in extremities, particularly in the feet. This type of neuropathy (nerve injury) usually develops in stages. Other symptoms are lightheadedness, heartburn, swallowing problems, diarrhea or constipation, bladder problems and failure to achieve sexual arousal. Patients can experience numbness or abnormal tingling sensations and pain in the hands and especially in the feet. Symptoms usually develop 10-20 years after the initial diabetes diagnosis. Patients with diabetes often develop abnormalities of the peripheral nerves in the extremities after a period of many years.
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