Hello, I have, what looks like a white-head pimple just below my left great toe, and second toe. I had this about 2 years ago, and it went away. This past winter, I had the same thing on my left index finger, just above the knuckle. It went away on it s own, as well. Now, this problem is back in the same, exact place on my left foot. What s new, is that it is swollen and red around what appears to be a whitehead. I thought this was a food allergy the first and second time it happened. Now, I am concerned. It is painful only when I press on it, and my shoes cause pain when I walk. Any ideas?