I've been having excruciating muscle cramps. They've happened in pretty much any muscle on my body that you can name. They are interfering with my ability to do the things I need to do. They can for quite a long time and are agonizingly painful. They can be triggered by exercise or just a simple change in position. They are driving me NUTS! When I asked my doctor, he simpley muttered something about "muscle fatigue". Has anyone else experienced anything like this?