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Journal of Thyroid ResearchVolume 2011 2011, Article ID 306367, 13 pages

Review ArticleDepartment of Psychiatry, Postgraduate Institute of Medical Education and Research PGIMER, Chandigarh 160012, India

Received 15 January 2011; Revised 23 April 2011; Accepted 29 May 2011

Academic Editor: Guillermo Juvenal

Copyright © 2011 Subho Chakrabarti. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Accumulating evidence suggests that hypothalamo-pituitary-thyroid HPT axis dysfunction is relevant to the pathophysiology and clinical course of bipolar affective disorder. Hypothyroidism, either overt or more commonly subclinical, appears to the commonest abnormality found in bipolar disorder. The prevalence of thyroid dysfunction is also likely to be greater among patients with rapid cycling and other refractory forms of the disorder. Lithium-treatment has potent antithyroid effects and can induce hypothyroidism or exacerbate a preexisting hypothyroid state. Even minor perturbations of the HPT axis may affect the outcome of bipolar disorder, necessitating careful monitoring of thyroid functions of patients on treatment. Supplementation with high dose thyroxine can be considered in some patients with treatment-refractory bipolar disorder. Neurotransmitter, neuroimaging, and genetic studies have begun to provide clues, which could lead to an improved understanding of the thyroid-bipolar disorder connection, and more optimal ways of managing this potentially disabling condition.





Author: Subho Chakrabarti

Source: https://www.hindawi.com/



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