Pituitary apoplexy is a medical condition that needs urgent diagnosis and treatment. It may occur spontaneously or may be precipitated by a variety of reasons including dynamic endocrine tests. Although pituitary apoplexy is usually seen in nonfunctional pituitary adenoma, it can also be seen in ACTH secreting macroadenomas. ACTH secreting adenomas present usually as microadenomas and in these patients apoplexy is rarely seen. In this paper we present a 30-year-old male patient with a history of Cushing's disease who suffered from pituitary apoplexy after the 1 mg dexamethasone suppression test. He underwent endoscopic endonasal transsphenoidal surgery and his symptoms and signs were significantly improved.