The time that it was the worst, the outside of my index finger on my left hand was covered in bumps
and it was very itchy, and my middle finger
on that hand was swollen and sore at the joint. I noticed it after a morning of intense deep cleaning my house, so I wonder if it is an allergic reaction to the cleaners I use. I have seasonal allergies. I've had a few episodes since then, and it's now on my right index finger near the first joint, but it's never as bad as that day.