Just saying here that when I went to an upper-cervical chiro (specializes in upper two vertabrae, they are "Palmer Specific or Blair technique) it relieved pressure on my brain stem (all your nerves pass through there and pressure affects the body part the nerves go to) and solved so many issues for me. It is all, always, about nerves affecting function of a body part. That is pretty crazy that one hour of pressure on a nerve point in your hand did this much to your hand. I suspect it is a wrist issue. My first thought is always always.. soak fifteen minutes in hot as you can stand water with a strong size dose of epsom salts, to get that magnesium into you through the skin. Do that as your med, and rub on arnica. friction matters, with the arnica. get it rubbed in entirely. just don't press hard. Don't take any ibuprophen for a couple days, let it be inflamed if you body wants to do that, as it is what heals. If it is still inflamed (hurting) in a week try the ibuprophen. I would not use the diluted dmso just yet. wait a couple days. And be aware that anything else you have on your skin, dmso will take it into your injury point. So, arnica being taken in, that would be useful. I have used dmso. Please don't stress too much over this, you make it worse. Mental pictures and words of how it is all back to normal and feeling fine, are very powerful. Every word you say outloud, or to yourself, is important. Make them positive not fearful.