Which physical findings are characteristic of diabetic peripheral neuropathy?

Updated: Oct 15, 2020
  • Author: Tanzim Khan, DPM; Chief Editor: Romesh Khardori, MD, PhD, FACP  more...
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Answer

Signs of peripheral neuropathy include loss of vibratory and position sense, loss of deep tendon reflexes (especially loss of the ankle jerk), trophic ulceration, foot drop, muscle atrophy, and excessive callous formation, especially overlying pressure points such as the heel.

The nylon monofilament test helps diagnose the presence of sensory neuropathy. [34] A 10-gauge monofilament nylon is pressed against each specific site of the foot just enough to bend the wire. If the patient does not feel the wire at 4 or more of these 10 sites, the test is positive for neuropathy. General use filaments can be obtained from the National Institute of Diabetes and Digestive and Kidney Diseases, or the clinician can use professional Semmes-Weinstein filaments.


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