Hypopituitarism | Johns Hopkins Medicine Health Library

Posted: July 8, 2015 at 2:51 pm

What is hypopituitarism?

Hypopituitarism, also called an underactive pituitary gland, is a condition that affects the anterior lobe of the pituitary gland--usually resulting in a partial or complete loss of functioning of that lobe. The resulting symptoms depend on which hormones are no longer being produced by the gland. Because the pituitary gland affects the other endocrine organs, effects of hypopituitarism may be gradual or sudden and dramatic.

Symptoms vary depending on what hormones are insufficiently produced by the pituitary gland. The following are common symptoms associated with reduced production of certain hormones:

Insufficient gonadotropins production (luteinizing hormone and follicle-stimulating hormone)

In premenopausal women, this leads to absent menstrual cycles, infertility, vaginal dryness, and loss of some female characteristics. In men, this deficiency leads to impotence, shriveling of testes, decreased sperm production, infertility, erectile dysfunction,and loss of some male characteristics.

Insufficient growth hormone production

This usually produces no symptoms in adults. However, it can cause loss of bone density and loss of muscle mass in adults. In children, this deficiency can lead to stunted growth and dwarfism.

Insufficient thyroid-stimulating hormone production

This usually leads to an underactive thyroid and may cause confusion, cold intolerance, weight gain, constipation, and dry skin.

Insufficientadrenocorticotropin hormone production

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Hypopituitarism | Johns Hopkins Medicine Health Library

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