You notice a hard patch of skin on your foot. Maybe it is on ...

You may first notice it when you get out of bed, walk down the ...

You get home from work, take off your shoes, and notice your feet look ...

You go to tie your shoes and feel a sharp or aching pain across ...

You step off a curb or walk across uneven ground, and suddenly your ankle ...

You trim your toenails and notice they feel harder than they used to. Maybe ...