Steroids
Steroids are a large group of chemical substances classified by chemical structure. Steroids include drugs used to relieve swelling and inflammation.
                	    Dexamethasone is a steroid used to achieve prompt suppression of  			inflammation in many conditions. Some examples include rheumatoid  			arthritis, systemic lupus, acute gouty arthritis, psoriatic  			arthritis, ulcerative colitis, and Crohn's disease. Severe allergic  			conditions that fail conventional treatment may also respond to
                	    dexamethasone. Examples include bronchial asthma, allergic rhinitis,  			drug-induced dermatitis, and contact and atopic dermatitis. Chronic  			skin conditions treated with dexamethasone include dermatitis  			herpetiformis, pemphigus, severe psoriasis and severe seborrheic  			dermatitis. Chronic allergic and inflammatory conditions of the uvea,  			iris, conjunctiva and optic nerves of the eyes are also treated with  			dexamethasone.  Dexamethasone is also used in the treatment of blood  			cell cancers (leukemias), and lymph gland cancers (lymphomas). Blood  			diseases involving destruction of platelets by the body's own immune  			cells (idiopathic thrombocytopenia purpura), and destruction of red blood cells by immune cells (autoimmune hemolytic anemia) can  			also be treated with dexamethasone. Other miscellaneous conditions  			treated with this medication include thyroiditis and sarcoidosis.  			Finally, dexamethasone is used as a hormone replacement in
                	    patients whose adrenal glands are unable to produce sufficient  			amounts of corticosteroids.
              	      
Information taken from www.medicinenet.com