Chapter

Thyrotoxic periodic paralysis

Annie W.C. Kung

in Oxford Textbook of Endocrinology and Diabetes

Second edition

Published on behalf of Oxford University Press

ISBN: 9780199235292
Published online July 2011 | e-ISBN: 9780199608232 | DOI: http://dx.doi.org/10.1093/med/9780199235292.003.3171

Series: Oxford Textbooks

Thyrotoxic periodic paralysis

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The association of thyrotoxicosis and periodic paralysis was first described in 1902 in a white patient. However, it soon became evident that thyrotoxic periodic paralysis (TPP) affects mainly Asian populations, in particular Chinese and Japanese, although isolated cases have also been reported in other ethnic groups such as white, Hispanic, African-American, and American Indian populations. The incidence of TPP in non-Asian thyrotoxic patients is around 0.1%, whereas in Chinese and Japanese thyrotoxic patients, TPP affects 1.8% and 1.9%, respectively (1–3). Despite a higher incidence of thyrotoxicosis in women, TPP affects mainly men, with a male to female ratio ranging from 17:1 to 70:1, according to different series. In the Chinese population, TPP affects 13% of male and 0.17% of female thyrotoxic patients. In the Japanese population, TPP was reported to occur in 8.2% of male and 0.4% of female thyrotoxic patients in the 1970s, but in 1991 the reported incidence had decreased to 4.3% and 0.04%, respectively (4).

Chapter.  2439 words. 

Subjects: Endocrinology and Diabetes

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