Format

Send to

Choose Destination
See comment in PubMed Commons below
Curr Mol Med. 2016;16(2):119-36.

Fibromyalgia and Bipolar Disorder: Emerging Epidemiological Associations and Shared Pathophysiology.

Author information

  • 1Department of Clinical Medicine, Faculty of Medicine, Federal University of Ceara, Rua Prof. Costa Mendes 1608, 4o andar, 60430-040, Fortaleza, CE, Brazil. andrefc7@terra.com.br.

Abstract

Fibromyalgia (FM) is a prevalent disorder defined by the presence of chronic widespread pain in association with fatigue, sleep disturbances and cognitive dysfunction. Recent studies indicate that bipolar spectrum disorders frequently co-occur in individuals with FM. Furthermore, shared pathophysiological mechanisms anticipate remarkable phenomenological similarities between FM and BD. A comprehensive search of the English literature was carried out in the Pubmed/MEDLINE database through May 10th, 2015 to identify unique references pertaining to the epidemiology and shared pathophysiology between FM and bipolar disorder (BD). Overlapping neural circuits may underpin parallel clinical manifestations of both disorders. Fibromyalgia and BD are both characterized by functional abnormalities in the hypothalamic-pituitary-adrenal axis, higher levels of inflammatory mediators, oxidative and nitrosative stress as well as mitochondrial dysfunction. An over-activation of the kynurenine pathway in both illnesses drives tryptophan away from the production of serotonin and melatonin, leading to affective symptoms, circadian rhythm disturbances and abnormalities in pain processing. In addition, both disorders are associated with impaired neuroplasticity (e.g., altered brain-derived neurotrophic factor signaling). The recognition of the symptomatic and pathophysiological overlapping between FM and bipolar spectrum disorders has relevant etiological, clinical and therapeutic implications that deserve future research consideration.

PMID:
26812920
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Bentham Science Publishers Ltd.
    Loading ...
    Support Center