Broadly speaking, endocrine disorders may be subdivided into three groups: •
Endocrine gland hypofunction/hypo
secretion (leading to
hormone deficiency) • Endocrine gland hyperfunction/hypersecretion (leading to hormone excess) •
Tumours (benign or malignant) of endocrine glands Endocrine disorders are often quite complex, involving a mixed picture of hyposecretion and hypersecretion because of the feedback mechanisms involved in the endocrine system. For example, most forms of
hyperthyroidism are associated with an excess of
thyroid hormone and a low level of
thyroid stimulating hormone. ==List of diseases==