Cushing's Syndrome

What is Cushing's Syndrome?

Cushing's Syndrome is a hormonal disorder caused by prolonged exposure to high levels of cortisol, a hormone produced by the adrenal glands. This condition can result from the use of corticosteroid medication or from the body producing too much cortisol.

Causes and Risk Factors

Prolonged use of corticosteroid medications: Such as prednisone for conditions like asthma or rheumatoid arthritis.
Overproduction of cortisol: Due to adrenal gland tumors or pituitary gland tumors (Cushing's disease).
Adrenal hyperplasia: Enlargement of the adrenal glands.

Symptoms of Cushing's Syndrome

Common symptoms include:

Weight gain, particularly around the midsection and upper back
Rounded face (moon face)
High blood pressure
Skin changes: Thinning skin, easy bruising, and purple stretch marks (striae) on the abdomen, thighs, or breasts
Muscle weakness
Excessive hair growth in women (hirsutism)

Diagnosis and Treatment

Diagnostic Tests

Diagnosis of Cushing's syndrome involves:

24-hour urinary free cortisol test: Measures cortisol levels in urine.
Salivary cortisol test: A late-night saliva sample to check cortisol levels.
Dexamethasone suppression test: Evaluates how cortisol levels change with a low dose of dexamethasone.
Imaging tests: Such as CT or MRI scans to detect tumors on the adrenal or pituitary glands.

Treatment Options

Reducing corticosteroid use: If the condition is due to corticosteroid medication.
Surgery: To remove adrenal or pituitary tumors.
Radiation therapy: For tumors that cannot be removed surgically.
Medications: To control cortisol production.

Prognosis

With proper treatment, most people with Cushing's syndrome can recover fully, although long-term health monitoring is often necessary.

References & Research

Historical Background

Cushing's syndrome is named after the American neurosurgeon Harvey Cushing, who first described the condition in 1912 in his landmark publication "The Pituitary Body and Its Disorders." Cushing identified the link between pituitary basophil adenomas and the characteristic clinical features of cortisol excess, establishing the foundation for modern neuroendocrinology.

Research Papers

The following PubMed topic searches aggregate the current peer-reviewed literature. Each link opens a live PubMed query — results update as new studies are indexed.