My husband has been having upper back and shoulder pain so bad that he can't sleep at night. He's tried all kinds of pain killers without any effect. Last night I put some DMSO on his back and his skin blistered up and his pain doubled. Can anyone tell me what we did wrong? I used a roll-on applicator that the DMSO came in and didn't put much on at all. I did, however, buy it at a feed store. Did I buy the wrong type?
