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Hypothyroidism is common in pregnancy with an estimated prevalence of 2-3% and 0.3-0.5% for subclinical and overt hypothyroidism respectively. [8] Endemic iodine deficiency accounts for most hypothyroidism in pregnant women worldwide while chronic autoimmune thyroiditis is the most common cause of hypothyroidism in iodine sufficient parts of the world.
A suppressed TSH could represent the hyperthyroid phase, but warrants further testing to investigate for possible Graves' disease. [6] A normal TSH with persistent symptoms could represent the shift between phases and requires repeat testing 4–6 weeks later; an elevated TSH at this time could indicate the hypothyroid phase. [6]
Signs and symptoms of pregnancy are common, benign conditions that result from the changes to the body that occur during pregnancy. Signs and symptoms of pregnancy typically change as pregnancy progresses, although several symptoms may be present throughout. Depending on severity, common symptoms in pregnancy can develop into complications ...
Certain pregnancy tests can detect the pregnancy hormone human chorionic gonadotropin (HCG) as early as six days after fertilization occurs, but false negatives may occur (meaning the test shows ...
Symptoms of hypothyroidism can include low energy, cold intolerance, muscle cramps, constipation, and memory and concentration problems. [38] It is diagnosed by the presence of elevated levels of thyroid stimulation hormone or TSH. Patients with elevated TSH and decreased levels of free thyroxine or T4 are considered to have overt hypothyroidism.
Thyroid disease is a medical condition that affects the function of the thyroid gland.The thyroid gland is located at the front of the neck and produces thyroid hormones [1] that travel through the blood to help regulate many other organs, meaning that it is an endocrine organ.
The diagnosis may be suspected based on signs and symptoms and then confirmed with blood tests. [1] Typically blood tests show a low thyroid stimulating hormone (TSH) and raised T 3 or T 4 . [ 1 ] Radioiodine uptake by the thyroid, thyroid scan , and measurement of antithyroid autoantibodies (thyroidal thyrotropin receptor antibodies are ...
Stimulating antibodies to the TSH receptor mimic TSH and cause Graves' disease. In addition, hCG shows some cross-reactivity to the TSH receptor and therefore can stimulate production of thyroid hormones. In pregnancy, prolonged high concentrations of hCG can produce a transient condition termed gestational hyperthyroidism. [14]