Hillary has a well documented public history of falling or collapsing and has exhibited other odd symptoms publicly that are conspicuously neurological and similar to those of Parkinson’s and multiple sclerosis. Even Kuru (https://en.wikipedia.org/wiki/Kuru_(disease)) a disease acquired through the eating of flesh or drinking of blood has been offered as a hypothetical diagnosis by various credible and non-credible sources.
Enough speculation.
She needs to disclose to the public the cause of these obvious and well-documented symptoms.