How do I deal with this diagnosis?

First, be kind to yourself. It's not easy to recover from the shock of learning your child has a developmental disorder that has no known cause or cure. Accept any and all feelings the diagnosis may elicit, and try not to blame yourself: It would've been impossible for you to figure out a way to shield your child from autism completely. The next step is to arm yourself with all the facts about the disorder. Knowledge is power, and the more you know, the more capable you'll feel about navigating the daunting autism gauntlet. That said, it's also important to give yourself a “break” from autism when it becomes too overwhelming. And if you find that the diagnosis has been so crippling that you've been unable to get past it, consider talking to a counselor or therapist. You can't — and aren't expected to — weather this storm alone.