fibromyalgia

noun

1. (countable, uncountable)A condition characterized by chronic pain, stiffness, and tenderness of the muscles, tendons, and joints.

   “They have since used the approach to look at the brains of people with fibromyalgia, a mysterious syndrome that causes pain all over the body. Volunteers with fibromyalgia also had more active glial cells in their brains, although this time in the cerebellar cortex and the medulla – regions that are linked to movement and automatic functions like breathing and digestion.”