Is fibromyalgia linked to rehumatoid arthritis?

Fibromyalgia is often described as an Arthritis related condition. It However as it is not a a disease of the joints it is not arthritis since it does not cause inflammation in the joints, muscles, or other tissues or damage them. However fibromyalgia like arthritis causes significant pain and fatigue and it can interfere with a person's ability to carry on normal daily activities.