ADHD is clearly a problem here, yes, but it's a different kettle of fish.
I'm talking more about anxiety disorders like generalised anxiety disorder, and potentially depression. If you suffer from work-related anxiety, procrastination is a classical avoidant-style coping mechanism.
Ironically, I clearly have something going on in that spectrum and I'm amazed it hasn't affected my career yet... but I've as of yet completely procrastinated on getting myself checked out for it.
