What is the autonomic (sympathetic) nervous system ?

The autonomic nervous system controls the sympathetic nervous system, which helps regulate the release of norepinephrine and epinephrine, chemicals that are needed to maintain a normal flow of blood and oxygen to the brain. The sympathetic nervous system is in charge of reflexive bodily functions, such as regulation of heartbeat, blood vessel contraction, sweating, salivary flow, and intestinal movements. Some researchers feel that the ANS is dysfunctional in fibromyalgia patients, causing their bodies to be in a constant state of alert, and ultimately leading to cellular exhaustion.

Return to: Fibromyalgia Definitions or view one of the following: Who gets fibromyalgia syndrome (fms) ? Are frequent headaches associated with Fibromyalgia ? Why might fibromyalgia patients feel worse before feeling better with guaifenesin ? What factors may aggravate or worsen fibromyalgia symptoms or cause a flare-up ? How is guaifenesin used to treat fibromyalgia ? Can emotional trauma or physical or sexual abuse cause fibromyalgia ? Are fibromyalgia and chronic fatigue syndrome the same disease ? Will HMOs pay for medical treatment for fibromyalgia ? What is the autonomic (sympathetic) nervous system ? What fibromyalgia symptoms may develop as a result of irregular sleep patterns ? In post-traumatic fibromyalgia, how long after an injury does it take for symptoms to develop ?