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The strategies included exploration of full text articles and abstracts from various search engines such as PubMed, Medscape, Scopus, Science Direct, Medline, Yahoo, Google Scholar and many others. The search included key words like anesthesia for endocrinopathies, acromegaly, adrenal crisis, craniopharyngioma, diabetes mellitus, endocrinology, parathyroid, phaeochromocytoma; thyroid crisis and endocrine [http://www.selleckchem.com/products/PD-0332991.html selleck kinase inhibitor] disorders. Basic understanding of endocrine disorders in anesthesia practice Anesthesia administration for endocrine surgery is different from that of routine surgical procedures. Release of various hormones and neurotransmitters in the perioperative period can lead to unfavorable and unpredictable outcome. Hormonal secretion from various glands like pituitary, thyroid, parathyroid, pancreas and adrenal can affect surgical morbidity. Autonomic dysfunction associated with co-morbidities of these glands affect perioperative anesthesia management. Though slightly contentious, anesthetic agents such as use of nitrous oxide may be teratogenic and inhalational anesthetic agents can cause genetic modifications. Similarly, endocrine drugs like vasopressin antagonist for hyponatremia, insulin for hyperglycaemia, in parenteral nutrition and for hyperkalemia, testosterone for uterine bleeding, and vasopressin, Terlipressin etc. for control of gastrointestinal bleed have been proving extremely useful in anesthesia and critical care practice.[6] Hypothalamic-pituitary-adrenal axis: A crucial role Activation of hypothalamic-pituitary-adrenal axis in response to surgical stimulus results in increased [http://www.selleckchem.com/products/Everolimus(RAD001).html mTOR inhibitor] secretion of catabolic hormones. This pathway involves release of corticotrophin releasing hormone from hypothalamus, which stimulates anterior pituitary to release adreno-corticotrophin releasing hormone (ACTH), which further acts on adrenal cortex to release cortisol. Cortisol has got both mineralo-corticoid and glucocorticoid actions. It causes hyperglycaemia, as it promotes gluconeogenesis in liver, protein catabolism and by reducing peripheral glucose utilization, apart from having an anti-inflammatory role also. High doses of opioids in general anesthesia [http://en.wikipedia.org/wiki/Cofactor_(biochemistry) Cofactor] and extensive dermatomal blockade during regional anesthesia are needed to suppress release of cortisol to prevent surgical stimulus. Opioids, midazolam, dexmedetomidine and etomidate affect release of adrenocortical hormones. Daily cortisol secretion is approximately 25 mg in average healthy adult. In perioperative period, if patient develops hypotension which is not responsive to intravenous (IV) fluids, then a single dose of 25 mg IV hydrocortisone can be given after taking blood sample for cortisol estimation. As per recent guidelines, there is no need to administer steroids if patient is currently not on steroids for the last 3 months and also if daily prednisolone intake is