To clarify diabetic neuropathy status in northern Oita Prefecture, Japan, we surveyed patients at 36 local clinics and hospitals, analyzing data on 673 (359 men, 307 women, 7 unknown) obtained from 980 respondents, including information on symptoms, achilles tendon reflex (ATR), and vibration sensation (VS). Symptoms possibly attributable to diabetic neuropathy—numbness, pain, paresthesia, andmuscle cramps—were found in 333 (49.5%). The proportion of subjects with symptoms increased withd isease duration or HbA
1c level. Symptom intensity was evaluated by subjects on a visual analog scale. We found that the longer patients had symptoms, the more intensively they perceived those symptoms. Abnormal ATR occurred in 47.8% and abnormal VS in 44.0% of respondents, with the proportion having abnormal ATR increasing with disease duration or HbA
1c level. Based on 2002 criteria proposed by the Working Group on Diabetic Neuropathy, Japan, 300 patients (44.6%) were diagnosed withd iabetic neuropathy. In conclusion, the prevalence of diabetic neuropathy in our clinical setting appeared comparable to that reported elsewhere in Japan.
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