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Cushing’s syndrome is a clinical condition in which the body is exposed to abnormally high levels of cortisol for a prolonged period, usually due to either an endogenous tumor (pituitary, adrenal, or ectopic) or long?term use of glucocorticoid medications. This chronic hypercortisolism disrupts metabolism, immunity, and tissue structure, producing a characteristic set of physical and systemic changes.

Typical features include central weight gain with a round “moon face,” fat pads at the back of the neck and between the shoulders, and thin arms and legs. The skin becomes fragile and bruises easily, often with wide purple stretch marks on the abdomen, breasts, and thighs, while muscles weaken, especially around the hips and shoulders. Many patients develop high blood pressure, insulin resistance or type 2 diabetes, low bone density, and frequent infections.

In women, Cushing’s syndrome can cause excess facial or body hair, menstrual irregularities, and reduced fertility; in men, it may lead to low libido and erectile dysfunction. Children typically show obesity with slowed growth and short stature.

Diagnosis combines clinical assessment, biochemical tests (urinary cortisol, late?night salivary cortisol, dexamethasone suppression), and imaging to locate the source of cortisol excess. Treatment aims to normalize cortisol and may include surgery to remove tumors, tapering of steroid doses, or cortisol?lowering drugs, often followed by tailored hormone replacement if needed.