Clinical burnout is not a personality type. It is not what happens to people who could not handle it. It is what happens when any system, human or otherwise, is asked to function beyond its sustainable threshold for long enough that continued functioning becomes too costly.
The brain-body does not ask what caused the overload. It does not distinguish between autistic burnout, coercive burnout, founder burnout, grief, or a year of uncounted small demands. Once the threshold is crossed, it only knows that the cost of continuing is too high.
The threshold
Every person has a point at which the system begins to close routes. This is not failure. It is adaptation. The system is doing exactly what it should: it is protecting itself from depletion that it cannot survive.
The closure usually begins with the routes that carry the highest cost. Action that requires performance under observation. Decision-making under time pressure. Social contact that demands calibration. These close first. The routes associated with lower cost often remain open longer, which is why a person in clinical burnout can sometimes walk, or read, or watch something, while being entirely unable to respond to an email.
Capability is not access. Access is not permission.
This is the distinction that most clinical assessments miss. A person may have the capability to perform an action, the knowledge and skill to do it, and still be unable to do it. The route is closed. The permission has been withdrawn. Telling the person to try harder does not open the route. The withdrawal was not a choice, and the restoration will not be a choice either.
Permission Architecture is the framework this platform uses to read what is happening underneath the behaviour. It begins here, with the most basic question: not why is this person not doing the thing, but which part of the route has been closed, and what is that closure protecting?