What are the main physiological effects of glucocorticoids?

Glucocorticoid is the main physiological role of regulating substance metabolism. And can also promote fat decomposition and elevated blood sugar, when the body shows some diseases, you can under the guidance of doctors, the right amount of consumption of some glucocorticoid to treat, this drug in use, but also can play an anti-allergic, anti-shock, anti-inflammatory and anti-toxic role. For the usual pathological reactions, can play a therapeutic role, in the use of glucocorticoids, to prevent eating some irritating food, may affect the normal play of drugs.