The sesamoid bones in the ball of the foot can crack, move and slip around.
This causes pain typically. A simple x-ray of the foot will reveal this.
I think this is the most common cause of pain in the foot. Sometimes a steroid injection here can do wonders.
Secondly, there can be a spur under the toenail...this hurts quite a bit too.
Will show up on the same foot X-rays.
Gout also presents here, or pseudogout...but there would be redness and considerable swelling compared to the sesamoid/spur causes.
I'd go to a podiatrist first, or at least an orthopedic doctor.
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Weezie looking at petunias 8.25.2017
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