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Hypopituitarism is the decreased (hypo) secretion of one or more of the eight hormones normally produced by the pituitary gland at the base of the brain. [ 1 ] [ 2 ] If there is decreased secretion of one specific pituitary hormone, the condition is known as selective hypopituitarism. [ 3 ]
Sheehan's syndrome, also known as postpartum pituitary gland necrosis, occurs when the pituitary gland is damaged due to significant blood loss and hypovolemic shock (ischemic necrosis) or stroke, originally described during or after childbirth leading to decreased functioning of the pituitary gland (hypopituitarism). [1]
After an episode of pituitary apoplexy, 80% of people develop hypopituitarism and require some form of hormone replacement therapy. [1] [2] The most common problem is growth hormone deficiency, which is often left untreated [1] [4] but may cause decreased muscle mass and strength, obesity and fatigue.
Circumstances should provide clues fairly quickly for the new diseases causing severe hypoglycemia. All of the congenital metabolic defects, congenital forms of hyperinsulinism, and congenital hypopituitarism are likely to have already been diagnosed or are unlikely to start causing new hypoglycemia at this age.
However, clinical, laboratory data, and imaging can all help with the diagnosis.[8] First and foremost, patients present with symptoms of hypopituitarism and must undergo pituitary hormone function evaluation. [1] Biopsy is the only means of accurate diagnosis as no autoantigen has been discovered.
PSIS is a common cause of congenital hypopituitarism, and causes a permanent growth hormone deficit. Some PSIS-affected individuals may also present with adrenal hypoplasia (5–29%), diabetes insipidus (5–29%), primary amenorrhea (5–29%), hypothyroidism (30–79%), failure to thrive (80–99%), septooptic dysplasia (5–29%), and Fanconi ...
Hypophysitis, inflammation of the pituitary gland.; Autoimmune hypophysitis (or lymphocytic hypophysitis), inflammation of the pituitary gland due to autoimmunity.; Nelson's syndrome, may occur after surgical removal of both adrenal glands, an out-dated method of treating Cushing's disease.
The term hypopituitarism is often used interchangeably with GH deficiency but more often denotes GH deficiency plus deficiency of at least one other anterior pituitary hormone. When GH deficiency (usually with other anterior pituitary deficiencies) is associated with posterior pituitary hormone deficiency (usually diabetes insipidus ), the ...