Hypothyroidism

In medicine, hypothyroidism is "a syndrome that results from abnormally low secretion of thyroid hormones from the thyroid gland, leading to a decrease in basal metabolic rate. In its most severe form, there is accumulation of mucopolysaccharides in the skin and edema, known as myxedema."

Thyroid stimulating hormone levels of less than 10 may not be important.