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see thyroid glandthyroid gland,
endocrine gland, situated in the neck, that secretes hormones necessary for growth and proper metabolism. It consists of two lobes connected by a narrow segment called the isthmus. The lobes lie on either side of the trachea, the isthmus in front of it.
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an increase in the function of the thyroid gland. Hyperthyroidism is one of the manifestations of a toxic diffuse goiter. It usually arises as a result of psychic trauma and sometimes with certain diseases and conditions, such as tuberculosis, rheumatism, or pregnancy. More rarely it is the result of an infection. It is manifested by increased excitability of the nervous system, intensification of reflexes, slight psychic agitation, rapid fatigability, acceleration of pulse rate, trembling of the hands, tendency to perspire, increase in basal metabolic rate, and weight loss. Hyperthyroidism is often combined with dysfunctions of other endocrine glands. Treatment for it includes remedies that calm the nervous system and microdoses of iodine.



The constellation of signs and symptoms caused by excessive thyroid hormone in the blood, either from exaggerated functional activity of the thyroid gland or from excessive administration of thyroid hormone, and manifested by thyroid enlargement, emaciation, sweating, tachycardia, exophthalmos, and tremor. Also known as exophthalmic goiter; Grave's disease; thyrotoxicosis; toxic goiter.
References in periodicals archive ?
Thyroid function in patients with subclinical hypothyroidism and subclinical hyperthyroidism Patient Tumor type Diagnosis fT3 (pg/mL) 1 Neuroblastoma Subclinical hypothyroidism 2.31 2 Hepatoblastoma Subclinical hypothyroidism 1.83 3 Non-Hodgkin lymphoma Subclinical hypothyroidism 3.10 4 Ewing sarcoma Subclinical hyperthyroidism 1.98 5 Non-Hodgkin lymphoma Subclinical hyperthyroidism 2.43 Patient fT4 (ng/dL) TSH (mIU/mL) 1 1.42 12.3 2 0.90 14.1 3 1.21 10.6 4 1.3 0.12 5 0.96 0.18 fT3: free triiodothyronine, fT4: free thyroxine, TSH: thyroid stimulating hormone Table 3.
In the lithium group, 14 patients (I6.7%) were diagnosed with hypothyroidism, 7 patients (8.3%) were diagnosed with subclinical hypothyroidism, and I patient was diagnosed (I.2%) with subclinical hyperthyroidism. In contrast, in the control group, seven cases (10.8%) of hypothyroidism and two cases (3.1%) of subclinical hyperthyroidism were identified.
Out of 2529 ICSI cycles with eligible data, 41 women with hypothyroidism, 28 women with hyperthyroidism, and 128 women with subclinical hyperthyroidism were excluded, and 2336 cycles were analyzed.
Subclinical hyperthyroidism was found in 10 (71.4%) patients while 4 (28.6%) presented with overt hyperthyroidism out of total hyperthyroid patients.
In a study conducted on patients with heart failure and reduced ejection fraction, neither subclinical hyperthyroidism nor hypothyroidism was found to be significant prognostic factors [37].
Subclinical hyperthyroidism is thought to worsen functional cardiovascular disability, begetting for instance atrial fibrillation, during stroke or recovery in young patients with hyperthyroidism.
Many patients with hyperthyroidism present with atypical symptoms or have subclinical hyperthyroidism with no apparent symptoms, low to borderline-low thyroid-stimulating hormone (TSH), and normal thyroid hormone levels.
Evaluation of endothelial function in subclinical hypothyroidism and subclinical hyperthyroidism. Thyroid.
138.9 [+ or -] 173.3 pg/ml; subclinical hyperthyroidism: 598.1 [+ or -] 639.2 pg/ ml vs.
Individuals with subclinical hyperthyroidism are at increased risk of hip and other fractures, according to the authors of a meta-analysis.