The American journal of medicine
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Multicenter Study
Prevalence and relative risk of other autoimmune diseases in subjects with autoimmune thyroid disease.
Common autoimmune disorders tend to coexist in the same subjects and to cluster in families. ⋯ This is one of the largest studies to date to quantify the risk of diagnosis of coexisting autoimmune diseases in more than 3000 index cases with well-characterized Graves' disease or Hashimoto's thyroiditis. These risks highlight the importance of screening for other autoimmune diagnoses if subjects with autoimmune thyroid disease present with new or nonspecific symptoms.