What does corns look like?

Problem analysis: The shape of the corns: the lesions are round or oval with localized keratin hyperplasia, and the needles are about the size of broad beans, showing light yellow or dark yellow, with smooth surface, flat or slightly raised skin, clear boundary, and inverted conical keratin plugs embedded in the central dermis. Because the tip of keratin plug stimulates nerve endings in dermal papilla, it will cause pain when standing or walking. Cornea is common in the third metatarsal bone in the front and middle of the foot, the lateral edge of the toe tibia, and the protruding and easy-to-rub parts, such as the back of the little toe and the second toe or toe.

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