The hard part at the center of the<unk> resembles a barleycorn or shoe tack, that is, a cone or funnel shape with a broad top and a pointed tip at bottom. Because of their shape,<unk>  intensify the pressure at the tip and can cause deep tissue damage and ulceration. Hard<unk>  are especially problematic for people with insensitive skin due to damaged nerves (e.g., in people with diabetes mellitus), as they more readily become infected and potentially lead to gangrene. In others they may interfere with walking and lead to the medical complications of a lack of movement and exercise. The location of soft<unk>  tends to differ from that of hard<unk> . Hard<unk>  occur on dry, flat surfaces of skin. Soft<unk>  (frequently found between adjacent toes) stay moist, keeping the surrounding skin soft. The<unk> s center is not soft, however, but indurated.
Corn 
Whitlow
Wellbee
Squawk 
Wart
Drustbed
Cowlick
Sniffle