what causes overactive nerves
Researchers are not yet certain of the answer. But many believe that the pain of fibromyalgia comes from âcentral sensitization.â This means that the problem might be a result of overactive nerves in the central nervous system (CNS) which can cause a more intense response to pain.he CNS is made up of the brain, the spinal cord and the nerves that control physical activities. For fibromyalgia patients, this possible problem in the central nervous system may lead to a greater sensitivity to pain. Itâs almost as if the âvolume controlâ for pain is turned way up.