Hyperthyroidism. The clinical spectrum.

Among the endocrine disorders, thyroid disease ranks second only to diabetes mellitus in prevalence. Hyperthyroidism accounts for a considerable portion of thyroid disease, occurring in both sexes and at virtually all ages. All forms of the condition are readily treatable, and the cost of treatment is not excessive, so accurate diagnosis has clear and satisfying rewards for both patient and physician. An awareness of the various causes of the disease and alertness to the often unusual ways that thyrotoxicosis can present are important elements of diagnosis. In addition, effective use of laboratory tests is essential.