Symptoms tend to be non-specific and include fatigue, nausea, darkening of the skin, and dizziness upon standing.

Treatment involves taking hormones to replace those not produced by the adrenal glands.

Treatment options include reducing steroid use, surgery, radiation, and medication.

Symptoms include fatigue and unexplained weight gain.

Treatment with synthetic hormone medications is usually effective.

Treatments are aimed at reducing complications. Surgery may help stabilize and correct the shape of the spine. Hormone therapy may increase final height in some cases.

The hormone-producing gland in the brain (pituitary gland) overproduces prolactin, decreasing the levels of some sex hormones. It's caused by a noncancerous tumor on the gland.

Common symptoms include breast discharge and irregular menstrual periods in women. Men may experience decreased sexual desire and breast enlargement. Prolactinoma can cause impaired vision and infertility.

The most common cause of a goiter worldwide is a lack of iodine in the diet. In the United States, where iodized salt is readily available, goiters may be a result of the over- or underproduction of the thyroid hormone or the presence of nodules in the thyroid itself. Not all goiters cause symptoms. Symptoms that do occur might include swelling, and cough. Rarely, symptoms may include throat tightness or trouble breathing.

Symptoms include unexpected weight loss, rapid or irregular heartbeat, sweating, and irritability, although the elderly often experience no symptoms. Treatments include radioactive iodine, medications, and sometimes surgery.

Treatments include birth control pills to regularize periods, a medication called metformin to prevent diabetes, statins to control high cholesterol, hormones to increase fertility, and procedures to remove excess hair.