what could cause Pain and swelling on top of my left foot directly under Big toe?

Foot aches badly when I flex my left foot and very sore to touch,I have not injured the foot,but have started walking approx. 2 miles per day. Asked By : anonymous ( Total points : 0 )

Foot aches badly when I flex my left foot and very sore to touch,I have not injured the foot,but have started walking approx. 2 miles per day. Asked By : anonymous ( Total points : 0 )

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what could cause Pain and swelling on top of my left foot directly under Big toe?