Neither. It is describing an event, like fainting. It can, but does not have to, occur with cardiac issues, carotid artery issues and dehydration...To name a few reasons.
I experience vasovagal syncope when I am around needles (even though I am mentally ok with needles.) could this be a symptom of another disorder?
Unlikely. Lie down when you have an injection or blood test.
Yes, together. Different mechanisms and treatments, but not unique to have pts with both. Doctor just needs to sort out.
Yes. You can have both. Work with your neurologist to determine which one is the symptomatic cause.