Definitely strains of my stepdaughter and her son.

I don't know if/where he is on the spectrum, though there's definitely a dash of undiagnosed bipolar with a heavy dose of self medication now. But as a kid, his rage issues were attributed to a WIDE variety of causes:

• autism
• oppositional defiance disorder
• ADHD
• gluten allergy
• some sort her doctor ordered during her c-section
• etc

Ignoring that most of it stemmed from abandonment issues with her. She only paid attention when he had a meltdown, so he very quickly figured out that it was the surefire way to get something from her.

All so she could feel less guilty about being a miserable parent. Yay.