The term "psychosis" is often used, both in everyday speech, and in the diagnostic terminology of many psychiatrists, as a non - specific term meaning acute illness.
However, as noted in the accompanying articles on this Wiki, we should be able not only to provide a full neurophysiologic descrition of psychosis, qualitiatively, but we should be able to provide a flexible quantitative (a numerical model) description of psychosis.
Treatment of psychosis can only have benefits if that treatment changes the underlying process.
In order to have a reasonable numerical model, the physiologic model must make biological sense. In this regard, most descriptions of psychosis have limited utility, because the biological element of the illness is not understood (in fact, as a general rule, most qualitative models of psychosis are simply descriptive of the phenomena, and provide no biological explanation.)
Yet, if we provide a concrete neurophysiologic description of psychosis we must first do two things. We must know what category to put it into, And we must make sure that our description is internally consistent.
Not all internal consistency can be guaranteed with numerical models, although such models help weekd out some of the most difficult sources of internal inconsistency.
The principal laws that must be met, in order to achieve internal consistency, include the following biological laws:
The law of limited resources
The Law of Evolution.
The sub set of laws implicit within Evolution and the Law of limited reousrces:
An expectiation of redundancy within biological systems
An expectation of limited biological resources within the organism.