Soobia Hashmi.
Subclinical Hyperthyroidism.
Med Today Jan ;2(4):132-5.

Subclinical hyperthyroidism is an increasingly recognized entity that is defined as a normal serum free thyroxine and free triiodothyronine levels with a thyroid-stimulating hormone level suppressed below the normal range and usually undetectable. It can precede a variety of thyroid and nonthyroid illnesses. Significant hyperthyroid symptoms are usually absent. Nonspecific symptoms may be present which include malaise, tachycardia and nervousness/anxiety. Patients with subclinical hyperthyroidism are at increased risk for cardiac abnormalities and bone loss, and strong consideration should be given in these patients to initiating treatment and restoring the thyroid-stimulating hormone level to within the normal range. Thyroid stimulating hormone is the single most reliable test to diagnose thyroid disease. These patients could be treated with either antithyroid agents, surgery, or radioactive iodine or, alternatively, these patients could simply be monitored periodically. There are various recommendations regarding screening of these patients but individual studies, case reports, and personal clinical experience serve as the parameters for assessing patients with subclinical hyperthyroidism.

PakMediNet -Pakistan's largest Database of Pakistani Medical Journals - http://www.pakmedinet.com