<prompt> Answer this question truthfullyWhat is the survival guide for residents on Cushings syndrome?  <response>: <reason> Life-threatening causes include conditions that may result in death or permanent disability within 24 hours if left untreated.Does not include any known cause.Iatrogenic or factitious Cushings syndrome due to administration of exogenous glucocorticoids. Cushings disease due to excess secretion of Adrenocorticotropic hormone from anterior pituitary. Paraneoplastic: due to ectopic secretion of ACTH includes, small cell lung cancer, benign carcinoid tumor s, Ewings sarcoma. Ectopic secretion of Corticotropin-releasing hormone CRH. Adenoma and carcinoma in the adrenal cortex Primary pigmented nodular adrenocortical disease PPNAD Bilateral macronodular adrenal hyperplasia BMAH 