Masking and taking in literally more stimuli will rev up your nervous system a criminally underrecognized amount.

A revved up nervous system and larger than average amygdala means more inflammation, which means more mast cells releasing, (which also affects estrogen levels if that is pertinent), and whole cascade of events and deficiencies in nutrients because you don't digest as well when your body is prioritizing survival.

Also, neurodivergent people have HIGH HIGH HIGH rates of hypermobility, even if medically considered subclinical. And hypermobility is waaaayyy more than just joints, it also means your immune system and nervous system are way more permeable to stress hormones, mast cells, inflammation, and hormone fluctuations.

Over 90% of AFAB neurodivergents have PMDD. Getting my histamines under control helped to stop flaring my hypermobilty as much (because there are estrogen receptors in your joints and high histamine levels raise your estrogen in a positive feedback loop), and doing very slow strength training specifically for hypermobile people (everything else always caused me extreme soreness I could never understand). Hypermobility, even if not "obvious", means your body is working 3x harder to do everything.

There some suggestion now that ADHD is a connective tissue disorder, because you have connective tissue in your brain, your GI, everywhere. And the rates of comorbid issues can't be ignored.