The danger is usually when you can’t feel pain and an ulcer develops on your foot. In cases of severe or prolonged peripheral neuropathy, you may be vulnerable to injuries or infections.

[3] Pain does occur, however, with cracks and small punched-out ulcers over the heel—it is not known why these are so painful. Pain of the forefoot is otherwise usually the result of peripheral ...

The 227 NBVV were classified endoscopically by color, form, and location in the ulcer crater into the following categories: white, red and black, protruded and flat, and central and peripheral.