I was able to get to the clinic, and found out that what I have is
gout. My uric acid is high, and has been
for some time based on previous blood tests, but no one thought it necessary to treat til now. I do have an old injury in that foot, in which I had an ankle reconstruction, so because gout is a form of arthritis, it loves old injuries. That explains why it is in my ankle and not other joints.