If you suspect that you have a thyroid problem, then the first thing you should do is see your primary care physician for a physical exam and tests. Your doctor can easily determine if you have a thyroid problem by interviewing you, performing a physical exam, and ordering some simple blood tests.   Depending on your symptoms, lab tests may include a Thyroid stimulating hormone concentration (TSH test), Total thyroxine (T4 test), Total triiodothyronine (T3 Test), an/or a Free T4 Concentration test. Depending on the results of your bloodwork, you may also have to have imaging, such as an ultrasound or CT scan. There are two common problems that can affect the thyroid. The thyroid can be overactive and overproduce the thyroid hormone, which is called hyperthyroidism. The thyroid can also be underactive and produce insufficient amounts of the thyroid hormone, which is called hypothyroidism. Hypothyroidism is second only to diabetes as the most common endocrine disorder. Both conditions can cause a goiter, which is the enlargement of the thyroid in an effort to increase and manufacture thyroid hormone. A goiter presents as a glandular swelling that can be detected as a swelling in the neck. It is only considered a symptom, not a medical disorder in and of itself. Hyperthyroidism causes an increase in metabolic activity. Symptoms of hyperthyroidism include:  Heat intolerance Tachycardia or rapid heart rate Weight loss Sweating Goiters The most common causes of hyperthyroidism are Grave’s disease, a toxic thyroid adenoma, a toxic multinodular goiter, lymphocytic thyroiditis, heart medications such as amiodarone, or a primary pituitary disorder. A thyroid storm is a rare cause and at the extreme end of the spectrum of hyperthyroidism. In this condition, the patient exhibits symptoms such as increased heart rate, vomiting, fever, diarrhea, dehydration, and altered mental status. Every cell in the body requires thyroid hormones and without them, signs of decreased metabolism are present. The symptoms of hypothyroidism...

How would you rephrase that briefly using Chinese?
就医。 了解甲状腺问题。 了解甲亢的症状。 了解甲亢原因。 了解甲减的症状。 了解甲减原因。 如果你认为自己可能患有甲减，请获取医生诊断。 了解甲减会引起哪些不良反应。