My youngest is about to be 20 months, and for the past three months, on and off, he has started doing this blood curdling, makes your ears hurt, SCREAM if he doesn't get his way immediately. I have tried everything within reason to try to get him to stop but nothing works!! I've tried diversion, ignoring it, screaming louder than him, trying to get him to use his words instead, and even time out. Idk what else to do to try to stop this behavior.

Any help and advice is welcomed, please. This momma is losing her mind.