Anyone that takes decadron, could you please help me.   The dr. recently switched my son from prednisone to decadron.  I thinking I am seeing weight gain????? Could someone please tell me what side effects are normal.  He is a 13 yr. old boy, so I dont know what is from the meds and what is "normal"  If anything is normal with a 13 yr old?????Thanks for your help....