I was told I had polymyalgia rheumatica in 1999.  I was really sick for a year, pains all over, could barely walk.  I nearly died. I finally found out I really had a tooth infection.  The cause was a poorly done root canal a year earlier. My tooth was poisoning me for over a year. 

The doctor that figured it out was a homeopathic doctor.  He knew right a way something was wrong with my mouth. 

The doctor who said I had Polymyalgia told me I had it after talking to me for 5 minutes. So I took the pain killers but was afraid what they were doing to me. I found a homeopathic doctor a year later and he said it was a problem in my mouth.  It is important to go to a dentist or specialist who knows how to take really good xrays.  I had to talk to a few dentists until I found a dentist.  I had a root canal on a failed root canal and the next day I could bend my knees again.  I was so exited I called my doctor and he didn't believe me. He suggested I was bi-polar!  Every week I got better. After three months I was in great health again. Please consider checking with your dentist or one that specializes in root canals.  The roots are sometimes very difficult to find.