I have myositis and the past few weeks I have had really really bad charlie horses in my legs and in the arches of my feet. So bad that I have to pull over if I'm driving, wake up from sleeping. When they start they last several hours and after they are gone my legs feel like I have done a major work out and are very week and sore. I am just wondering if this is something that goes long with myositis. If anybody else has this going on please let me know. And any suggestions would be great.