I won't speculate on EW's medical issues apart from recalling his mom mentioning in a
FB post
GROUND SEARCH FOR ELI WOOD
View attachment 639546
that he needed medication, and him mentioning in his
GoFundMe about a 'disability'. I think his brother TW may have said fatigue too. EW has a post on FB about POTS (
Postural Orthostatic Tachycardia Syndrome) though nothing says he has that. Yes, it is possible for a person with POTS to collapse or pass out if severely frightened
Link.
2nd Link.
In reading "Psychology Today" (no specific article) I have noted a general behaviour that sometimes occurs in panic of a person present during a medical emergency that would cause them to NOT call 911. Before posting, I want to clarify,
there is no evidence something like this occurred in the EW case. Only speculating that 'it may have'.
Possible reasons for a person not calling 911:
Panic
freezing
misinterpreting symptoms
fear of being blamed
impairment – drugs/alcohol
thinking the person just needed space/time
not realizing it was an emergency
having a crisis mental episode: crisis psychology shows that someone who is overwhelmed, dissociating, or emotionally destabilized is more likely to respond in any of the above ways.