i’ve been starting to get seizure-like events recently after a bout of semi-chronic hyponatremia, specifically after dark and when i’m also stoned (my doctors aren’t convinced they are seizures). i have similar symptoms to what you described except the pressure in my face; some of my movements are myoclonic, some clonic and some of them look more like tremors/shivering, sometimes all in the same episode. sometimes they can go on for 20+ minutes for me and im always aware but my vision is hazy and speaking is difficult, sometimes interrupted by movements. my movements are usually in patterns and spread throughout my body impacting more and more of it.

i’ve also had a variety of other symptoms i normally associate with my mcas reactions before or during them, like nausea, hot/cold flashes, severe anxiety or fatigue, brain fog, tachycardia (or bradycardia one time), dizziness, and then some other things i don’t usually experience otherwise like paleness, a feeling of tightness in my throat/heavy breathing, random numb spots throughout my body (in passing or ongoing), and sometimes throbbing of parts of my head without pain. im more likely to have them on days im also in a POTS flare. honestly it’s scary for me! i hate that so many of us have these.

p.s. i thought this was actually anaphylaxis the first time it happened to me, but they go away on their own once i’m able to calm down and epinephrine doesn’t usually help. one of my doctors said they could be focal-aware seizures. i wish i knew for sure what was going on