Replies

I know people want this video to indicate some sort of dire medical problem, but honestly, it’s just an over-exaggerated reaction of surprise that’s intended to be funny. Ellen DeGeneres does it, too. Maybe Hillary is a fan, or maybe it’s popular in that community.

Hillary's eyes where closed when this took place:
From medpagetoday.com :
"In nearly every one of more than 200 patients studied, the eyes of those with psychogenic nonepileptic seizures closed during seizures, while the eyes of those with epilepsy remained open"

http://www.medpagetoday.com/Neurology/Seizures/3552

From Wikipeda (I personally don't know much about this)
"There is no scientific consensus as to what causes PNES. However, many physicians believe the condition may be triggered by psychological problems (irrespective of whether the patient shows any obvious psychological distress or pathology).
https://en.wikipedia.org/wiki/Psychogenic_non-epileptic_seizures

Seizures.
Work with someone who has them. My coworker’s seizures are similar - they start with what looks like an involuntary twitch, as if they are surprised by the touch of something cold or a spider/insect landing on their neck. Bigger initial twitch followed by smaller head shakes -Clinton’s head shakes are more up/down whereas my coworker’s are a little more left/right. Those head shakes attenuate compared with initial twitch.
My colleague is not aware of them for the most part and is usually able to keep reliably returning to the task at hand (reading, typing). Hers “peak” with back to back twitches/head shake episodes (3 in rapid succession)after which point they repeat at diminished levels and are soon gone. Haven’t seen anymore for days. My colleague had a major seizure (on the ground in full seize) 4 months ago.