severity grade: 2
Tendinitis (or something) of a toe flexor - symptom was pain under front ball of foot though
This flared up again for 2 months in late 2000, and 1 week in Feb. 2002.
Stretching the toe flexor helped a lot when I figured that out - basically start with a calf stretch, but then just keep pushing the knee forward letting the heel come off the ground, but keeping the ball of the foot and toes on the ground.