It's a spectrum, right there in the name. People with severe autism often can't even speak. My sister didn't say her first word until she was four. Watching my

It's a spectrum, right there in the name. People with severe autism often can't even speak. My sister didn't say her first word until she was four. Watching my own just-turned-four daughter go on at length about her day and tell stories, I can't imagine my mom's fear.