Hi welcome to the board though sorry for your pain. My toe nails are so thick,discolored,and grow a weird way. This can be common with people who have rsd and I have read about toe nails falling off. I am not sure why this happens other then the system is not working properly. Just like when people get sores or rashes from rsd. Maybe infammation? I think with proper treatment for the pain these symptoms get better. Are you under the care of a doc who deals with rsd? If not I would get into one asap.