Reddit mentions of No More Meltdowns: Positive Strategies for Managing and Preventing Out-Of-Control Behavior

I would strongly recommend talking to a behavioral specialist. The sooner the better. In addition, I've found the book No More Meltdowns to be a pretty good source for strategies on how to prevent these type of behaviors. It helps you learn to recognize early signs, and tips on both preventing and dealing with these type of behaviors.

From my experience I know it can seem like a child can go from 0-100 in a split second, but often times there are some early warning signs. For example, we've noticed that my son will start pulling at his ear when he is getting overwhelmed. Now when we see him doing that we will immediately address the reason before it turns into a full on meltdown.

I know it is never easy to deal with and there is no single answer, but through some work you can help make things better for everyone.

How about The Explosive Child by Ross Greene? Focuses on the Collaborative Problem Solving approach (see also www.thinkkids.org), which views temper tantrums as a delay in the development of emotion regulation skills and works on building those skills. Jed Baker's No More Meltdowns is another great option with some similar ideas.

For general parenting -- including dealing with tantrums -- I love How to Talk So Kids Will Listen and Listen So Kids Will Talk by Faber and Mazlish. Dawson and Guare's Smart But Scattered helps with executive functioning skills-development of all types (emotional regulation is an executive function; others include things like organization and planning).

Oh, and I haven't made it all the way through it yet, but The Whole Brain Child has some good ideas on how to talk about distress tolerance with kids, e.g., "surfing the emotional waves."