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Heat maps represent the location of pain: (a) participants without diabetes; (b) participants with diabetes but without DSPN; (c) participants with non-painful DSPN; (d) participants with painful DSPN. The heat bars represent the percentage of participants in each group. Because a pain intensity score on the NRS ≥4 was the criterion for painful neuropathy, some mild to moderate pain may have been experienced in the non-painful DSPN group
