Comment by jaggederest

Differentials for ADHD include: panic disorder, metabolic issues, anxiety disorder, depression, adrenal disorders including deficiency and excess like pheochromocytoma, bipolar, autism, learning disorders, personality disorders like borderline and antisocial, OCD, trauma including PTSD and CPTSD, sleep disorders including narcolepsy, sleep apnea, restless leg syndrome, insomnia, ironically substance use disorder like cocaine and amphetamine addiction, thyroid issues again ironically including both hypo and hyperthyroid, seizures, hearing and vision issues, and life stressors.

So, uh, ... a whole textbook. And I probably forgot some.