People are also speculating drug use, and I personally wouldn't rule that out considering just how stressful his life currently is. Hell, I feel as though his hairline has receded a bunch (again) too.

I think it's likely that's it's a mixture of all three. Drug use (even some completely above-board prescriptions. I know that my ADHD prescription makes me act strangely when I'm low on sleep or over-caffeinated) would dull his ability to mask his other behavioral idiosyncrasies, which could originate with his placement on the spectrum and the fact that he's surrounded by sycophants. But who fucking knows.