Due to thyroid follicle cell breakdown from an autoimmune reaction, infection, drugs, painless thyroiditis, and subacute thyroiditis, also known as destructive thyroiditis, are less common causes of thyrotoxicosis.
However, it is difficult to differentiate GD from painless thyroiditis based on the physical manifestations.
Healthy controls and thyrotoxicosis patients with painless thyroiditis and subacute thyroiditis were also recruited.
Clinical characteristics of frequently recurring painless thyroiditis: contributions of higher thyroid hormone levels, younger onset, male gender, presence of thyroid autoantibody and absence of goiter to repeated recurrence.
Recurrent severe painless thyroiditis requiring multiple treatments with radioactive iodine.
is also unlikely, as it is autoimmune in origin and the patient's antithyroid antibodies were negative.
Up-regulation of Th1-inducing cytokines has been found in association with painless thyroiditis
, an active phase of Hashimoto thyroiditis; and Th2 up-regulation has been found in Graves disease.
My eye caught a title-'Painless Thyroiditis
: A Community Outbreak in Nebraska.' The outbreak occurred between January and March of 1984 in a seven-county area of southeastern Nebraska, and it numbered 54 cases, most of them in the county of York.
Examples of the second group are painless thyroiditis and Riedel's (fibrous) thyroiditis .
When we classified thyroiditis patients based on the presence or absence of neck pain, 8 subjects fulfill the criteria of thyroiditis with thyroid pain and tenderness, while the remaining 17 subjects fulfill the criteria of painless thyroiditis. Among the 8 painful thyroiditis subjects, 7 individuals were SAT--those will be analyzed in more detail below--while one subject (a child) was diagnosed with acute bacterial (suppurative, infectious) thyroiditis.
Among those with painless thyroiditis, two subjects were diagnosed as Hashimoto's thyroiditis based on the clinical findings, the laboratory results especially those of high and persistent titer of AMA; one subject was diagnosed as postpartum thyroiditis; one subject had lithium-induced thyroiditis, and 13 subjects fulfilled the criteria of painless sporadic thyroiditis.
Apart from this, in our study, RFA complications were 1 case of transient voice change and 1 case of late-onset, painless thyroiditis
with transient thyrotoxicosis.