what causes cushing's disease
Cushing's syndrome is caused by either excessive cortisol-like medication such as prednisone or a tumor that either produces, or results in the production of excessive cortisol by the adrenal glands.Cases due to a pituitary adenoma are known as Cushing's disease.It is the second most common cause of Cushing's syndrome after medication. A number of other tumors may also cause Cushing's.ases due to a pituitary adenoma are known as Cushing's disease. It is the second most common cause of Cushing's syndrome after medication. A number of other tumors may also cause Cushing's.