Is there a causal relation between ADHD and chronic fatigue ?
Could also be hormonal, sickness, stress, lack of quality sleep/nutrition, etc. for men the drop off in testosterone definitely can manifest in feelings of lethargy.
When people ask if I'm frustrated/angry that it took until I was mid-30s to get diagnosed, I respond by saying how I'm proud of myself for achieving what I have so far unmedicated/undiagnosed - and excited about what the future might hold.
I've seen the Butterfly Effect movie from the early 00s. I know that going back and changing one thing can have drastic consequences, and not always for the better. ;)
My partner reports massive improvements (no fidgetting, calmness, less impulsive) but I still feel .... the same and sometimes worse when it comes to fatigue and work, even though I sleep well.
Methylphenidate has helped _immensely_. As has accepting the wiring of my brain, taking a two-months sabbatical, and practicing awareness about the ADHD habits. I’m having the year of my life. I can’t remember being productive this consistently basically ever.
[0]: https://news.ycombinator.com/item?id=29768418