Thanks, all. He does get stressed working on his dissertation and having to grade a lot of papers. He was doing this on vacation and we've noticed he stresses more when out of his routines/environment. My mom had a throat clicking thing. I've pretty much traced the ADHD gene to her. She seldom sat down and could never watch tv. Never saw her read a book so I suspect maybe a reading problem...though she'd make out the newspaper...perhaps with difficulty, don't know. Mom was also very excitable. Interesting to see where the gene comes from.
