I'm going to try avoiding them in the future. They haven't been horrible but each seems to be a little worse and they always come up negative. I tend to be a little more likely to have a flare up after one but with only 5 it might be coincidence. It may be caused by just all the movement and touching rather than the shocks themselves. One doc hit a nerve in my affected hand which momentarily paralyzed the thumb and caused... ...you guessed it... ...a lot of pain.