I started vaping in January. I have been making my own juice since day one. I just turned 50. My fingers are very painful in the mornings. Wrist in my right hand is really bad. Blaming that on the bottom of tube firing button on one of my favorite mods. It sits on the shelf in my arsenal of mods now. Poor thing. The other thing is all of this juice that gets on my hands. I wonder if it has something to do with the pain. Summer time and the warmth means more leaking. I love to vape, but have been wearing a patch this week to see if I can quit ecigs. I need to know if the pain will stop if I can quit. It's not any easier to quit that cigs, I can tell you that. Life long nicotine addiction. Cigs, gum, patches and now ecigs. The pain has been bad since a couple weeks ago, so almost just when I turned 50 and 6 months into vaping. I will keep you posted.