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Sindrome de Cushing exogena e retirada de glicocorticoides Romanholi DJ; Salgado LRArq Bras Endocrinol Metabol 2007[Nov]; 51 (8): 1280-92Glucocorticoids are widely used in clinical practice to control the activity of autoimmune, inflammatory, allergic diseases and other nosological entities. Therapeutic doses of glucocorticoids are often administered inappropriately and it is a particular problem because chronic therapy has many side effects, ranging from suppression of the hypothalamic-pituitary-adrenal axis and Cushing's syndrome to infections and changes in mental status. Factors influencing both the therapeutic and adverse effects of glucocorticoids include the pharmacokinetic properties of the glucocorticoid, daily dosage, individual differences in steroid metabolism and the duration of treatment. When used to control the activity of these diseases, four aspects of glucocorticoid withdrawal deserve special attention. First, the illness treated by steroids may relapse. Second, the hypothalamic-pituitary-adrenal axis may remain suppressed for a long time. Third, psychological dependence to these hormones often develops. Fourth, a nonspecific withdrawal syndrome may develop even while patients are receiving physiological replacement doses of glucocorticoids. The severity of the withdrawal syndrome depends on the phase and degree of dependence and includes many symptoms as anorexia, nausea, emesis, weight loss, fatigue, myalgias, arthralgias, headache, abdominal pain, lethargy, postural hypotension, fever, and skin desquamation.|Cognition/drug effects[MESH]|Cushing Syndrome/*chemically induced[MESH]|Glucocorticoids/administration & dosage/*adverse effects/pharmacokinetics[MESH]|Humans[MESH]|Hypothalamo-Hypophyseal System/drug effects[MESH]|Pituitary-Adrenal System/drug effects[MESH]|Substance Withdrawal Syndrome/*diagnosis[MESH] |
