According to a report from Belgium, the
prevalence of Graves’ disease is about 0.2% while that of
GTH is 2% to 4% (1).
Yeo et al reported that Graves’s disease
was seen in 1.2% and GTH in 11% of Singaporean
women in the first trimester of pregnancy (2).
Graves’ disease
requires immediate treatment, while GTH can be
viewed as a physiological phenomenon that subsides spontaneously
without treatment in most of the cases