Prevalence and Incidence of Hashimoto's Thyroiditis

Prevalance of Hashimoto's Thyroiditis:

1,490,371 adults and 205,159 children in the USA 1996 ¹ ... see also overview of Hashimoto's Thyroiditis.

Prevalance Rate:

approx 1 in 182 or 0.55% or 1.5 million people in USA [Source statistic for calcuation: "1,490,371 adults and 205,159 children in the USA 1996 ¹" -- see also general information about data sources]

Hashimoto's Thyroiditis: Rare Disease

Hashimoto's Thyroiditis is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Hashimoto's Thyroiditis, or a subtype of Hashimoto's Thyroiditis, affects less than 200,000 people in the US population.

Ophanet, who are a consortium of European partners, currently defines a condition rare when if affects 1 person per 2,000. They list Hashimoto's Thyroiditis as a "rare disease". More information about Hashimoto's Thyroiditis is available from Orphanet

Prevelance statistics for Hashimoto's Thyroiditis:

The following statistics relate to the prevalence of Hashimoto's Thyroiditis:

• 5 times more common in women than men in the US (Academy of Family Physicians, 2004)
• more statistics...»

About prevalence and incidence statistics:

The term 'prevalence' of Hashimoto's Thyroiditis usually refers to the estimated population of people who are managing Hashimoto's Thyroiditis at any given time. The term 'incidence' of Hashimoto's Thyroiditis refers to the annual diagnosis rate, or the number of new cases of Hashimoto's Thyroiditis diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.

Footnotes:
1. Rose and Mackay, 1998, The Autoimmune Diseases, Third Edition

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