This is my first time writing on this site - i am being driven to despair by my toddler boy. He is 20months and won't stop screaming. He has big big lungs and seems to do it just for the fun of it whether we are on a bus, in a crowded room or just at home by ourselves. Help - i've tried telling him off, shhshing and distracting but nothing is working. Does anyone have any other suggestions......