A lot of driving instruction and testing focuses on physical abilities including age, the ability to drive, eye conditions and the effect of certain drugs.
This tendency in many ways neglects an important part of our lives, that is, the mental health and state of the driver. Mental health including the state of health of the driver impacts driving.
Yet it is only in instances of acute mental illnesses when the driver’s health is considered critical in that it would inadvertently affect one’s fitness to drive.