This is a disease with prevalence of 36 to 60 cases per million individuals and an incidence of 3 to 4 per million people each year. Though it may occur at any point of the lifetime, its most common onset is during middle-age. In any event, this illness may be present for several years before it leads to clinical signs and symptoms that prompt a visit to the health care practitioner [1, 2].
The condition originates from benign tumors or adenomas of the pituitary gland. Since it secretes substances directly into the bloodstream, it is one of several ductless, or endocrine, glands. They interact with each other and provide feedback to determine which ones will release additional—or less—hormone [1, 2].
In essence, the levels of these chemicals will vary throughout the day and night, and fluctuations have to do with physical exercise, stress, consumption of food, and sleep .