Hi Sammi,
I've had multiple chem sensitivity for decades, before it had a label. I get migraines & vomitting from exposure to a number of substances, sometimes am sick for days dep. on level of exposure.
I'm also very sensitive to meds. My kids & I have had a number of adverse drug reactions; it's obvious there's some sort of genetic metabolic glitch going on. Whenever we are Rxd meds, I just do a partial fill, 2 days worth, to see what's gonna happen. Nine out of ten times, the med isn't tolerated.
My life has improved some since getting my thyroid levels 'tweaked.' Even borderline low thyroid slows down the body's ability to deal with toxic substances. I still can't use cleaning chemicals, etc., but I can now tolerate a few min. in a dept store, or walking past someone wearing perfume.
I've also got minor adrenal malfunction that supposedly contributes to the MCS, however, I haven't been able to tolerate the meds to fix that.
Are you on antiepileptic drugs for your seizures? That sounds pretty serious.
I do know people who are pretty much housebound due to MCS, who have made their homes clean, "green" havens just to survive.
Best wishes.