I think it depends. I am pretty sure there is an optimal level of anxiety/stress for anyone to achieve peak performance. Different people get there at different speed. Some people may find that stress 2 weeks before the deadline, and you and I may like to do it the day before. I don't think this is a marker for
not-likely-adhd at all. I remember my adviser was having nightmares two years before a grant runs out. His internal deadline just runs very differently than mine.