I tend to not agree with the Parkinson meme as Hillary has had these fainting type spells going back into her college days and early speaking engagements.
I lean towards it being epilepsy and stressful events can trigger seizures. I have heard the “over heated” excuse now 3 or 4 times for her and that is also a type of epilepsy aura that precedes a seizure event. She says she is getting warm and the team takes action to get her out of the situation. It would also explain why they didn’t take her to a hospital for an evaluation. People who have epilepsy don’t need hospital level medical attention unless they go status.
Now, if they cannot control her seizure events with medication or a RNS Stimulator then she is not fit to be President.
You may be right. She’s hiding her health issues so we can only guess. My opinion is, politics aside, she is physically unfit for office.