★★★★★
As mentioned in my first post on the subject, besides a possible karate training injury, I had also purchased a Berkey Stainless Steel Water Filtration canister and started drinking the amazingly purified water right around the same time the trigger and arthritis finger symptoms appeared out of the blue.
Well, when healing was still moving very slowly a month after the cortisone shot, I decided to stop drinking the filtered water from my Berkey just to rule it out. Well guess what. Within a few days, all arthritis and trigger finger symptoms in both hands COMPLETELY disappeared!
People often mention to avoid distilled water because it can deplete critical nutrients from your body. However they rarely mention the same about purified water. Just wanted to put it out there that if you have sudden onset of arthritis in your hands (or elsewhere for that matter) or trigger finger, you might want to change your drinking water source and see if that helps.
It was an easy fix, but took a few months to figure out!
I hope this information helps someone else.