In short
Cushing's syndrome results from prolonged excess cortisol, whether from medicine or the body's own overproduction, and causes a recognizable pattern of physical changes that reverses once treated.
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01
What Cushing's Syndrome Is
Cushing's syndrome results from prolonged exposure to too much cortisol, the body's main stress hormone. The most common cause is long-term use of corticosteroid medicines for conditions like asthma or arthritis; less often it comes from a tumor in the pituitary gland, adrenal gland, or elsewhere that drives the body to overproduce cortisol on its own.
02
Who Gets It
People taking corticosteroid medicines at higher doses or for extended periods are most commonly affected, and this risk is a known, expected trade-off doctors weigh when prescribing these drugs long-term. Cases from a hormone-producing tumor are less common and can occur at any age, somewhat more often in women.
03
Symptoms
Cushing's syndrome tends to produce a recognizable pattern: weight gain concentrated in the face, neck, and trunk, thinning skin that bruises easily, purple stretch marks, muscle weakness, and slower wound healing. High blood pressure, high blood sugar, mood changes, and irregular periods can also occur, developing gradually over months rather than suddenly.
04
How It's Confirmed
Diagnosis starts with tests measuring cortisol levels in saliva, blood, or a 24-hour urine collection, sometimes combined with a dexamethasone suppression test that checks how cortisol production responds. If levels are confirmed too high, imaging such as MRI or CT helps locate whether a pituitary, adrenal, or other tumor is the source, alongside a calcium and bone density check since cortisol excess weakens bone.
05
Treatment Landscape and Outlook
When medicine-related, treatment involves gradually adjusting the corticosteroid dose under a doctor's guidance rather than stopping abruptly. When caused by a tumor, surgery to remove it is usually the first approach, sometimes followed by radiation or medicines that lower cortisol production. Most symptoms improve substantially once cortisol levels normalize, though recovery can take months; an endocrinologist manages diagnosis, treatment, and the careful process of tapering cortisol back to normal.
Sources
- Cushing's Syndrome - MedlinePlusmedlineplus.gov
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