My husband began to get some pain in his foot today, then it moved to his ankle. We see two spots--one looks like a mosquito bite, the other is a raised bump about the size of a quarter, which is hard. Some redness, not bad. there is also a small indention of the skin beside the larger bump. We were working in a basement cleaning out boxes. then working in the yard, so wondered if it is probably an insect bite of some sort.