TIA of less than a second

TIA can lasts few seconds to 24hour. Why a TIA does not lasts for a LESS than a Seconds?

I have discussed experts and professor in Neurology. Everyone has said that there is no TIA of less than ONE second.

[caregiver222]

Ah yes. The boxtop school of neurology. Yes. "Everyone. All three people you asked.  You can have a TIA of less than one second. The etiology of such a TIA is commonly vasovagal and caused by a simple cough. But this question is like asking "How many Angels can fit on the head of a pin". It has no meaning.

[marie2354]

I am allergic to my mother  if I am close to her kind of speaking
I went to a pain specialist due to I am in so much pain but everything and anything I become allergic to I take benedryl or zertic  at this this that is all am type2 no drugs.tia.strroke in 83 no drugs hepatisis due to meds no drugs lupus sle no drugsfibro no drugs drs just have problem giving me drugs so I take none but benedryl . had this needle with lidocaine dr was a fraid to do anything else well day later had numbness on right side scare but ok went to dr she could do nothing went to ER they could do nothing ct.xray tests said I had TIA go home rest no drugs numbness come and goes said the needle in back w/lido couldnut have done it BUT it happen day after procedure on 6th and still I have affects and they could do nothing because I am ALLERGIC SOMETHING HAS TO BE DONE BY the way no blood pressuer and sugar is about 190 if I eat ice cream gets to 300 but no to offten blur vission dizzy numb on rt side Help been to nuero 5