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Pain. 2012 Apr;153(4):744-54. doi: 10.1016/j.pain.2012.01.002. Epub 2012 Mar 3.

Pain, affective symptoms, and cognitive deficits in patients with cerebral dopamine dysfunction.

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1
National Institute of Mental Health, Bethesda, MD, USA.

Abstract

Converging preclinical, and human epidemiological, neuroimaging, and genetic evidence suggests a central role for dopamine neurotransmission in modulating pain perception and analgesia. Dysregulation in dopamine signaling may modulate the experience of pain both directly, by enhancing or diminishing the propagation of nociceptive signals, and indirectly, by influencing affective and cognitive processes, which affect the expectation, experience, and interpretation of nociceptive signals. Hypersensitivity to pain and high rates of comorbid chronic pain are common in disorders linked with deficits in dopamine system function, including disorders of mood and affect, substance abuse, and Parkinson disease. Hyposensitivity to pain, however, is common in patients with schizophrenia, which has been linked with excessive dopamine neurotransmission. Although patients are typically affected most by the primary symptoms of their disorders, alterations in pain perception may further increase the burden of their illness, compromising their quality of life. The present review focuses on this relationship, and discusses clinical and potential therapeutic implications for both patients with dopamine-related disorders and those with chronic pain syndromes.

PMID:
22386471
PMCID:
PMC3816524
DOI:
10.1016/j.pain.2012.01.002
[Indexed for MEDLINE]
Free PMC Article
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