I understand your concern for your husband Decadron is a corticosteroid. It works by decreasing or preventing tissues from responding to inflammation. It also modifies the body s response to certain immune stimulation. Decadron is well suited for your husband s medical needs. You should check with your doctor immediately if any of these side effects occur when taking dexamethasone( Main component of Decadron): More common Aggression agitation anxiety blurred vision decrease in the amount of urine dizziness fast, slow, pounding, or irregular heartbeat or pulse headache irritability mental depression mood changes nervousness noisy, rattling breathing numbness or tingling in the arms or legs pounding in the ears shortness of breath swelling of the fingers, hands, feet, or lower legs trouble thinking, speaking, or walking troubled breathing at rest weight gain Some of the side effects that can occur with dexamethasone may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your doctor Increased appetite Abnormal fat deposits on the face, neck, and trunk acne dry scalp lightening of normal skin color red face reddish purple lines on the arms, face, legs, trunk, or groin swelling of the stomach area thinning of the scalp hair