disease is that is a construct that conceptualizes a constellation of signs and symptom

To witness, an old politicians behaviour and to define his mental disorders and to views these behaviours as syndromes comprising clinically significant disturbances of cognition, emotion or behaviour that reflect underlying dysfunctions. 

Such faltering confused behaviour  are normally associated with distress but cannot be diagnosed if the behaviour is culturally normal or merely socially deviant, unless it reflects a dysfunction.

Yet disease is that is a construct that conceptualizes a constellation of signs and symptoms as due to an underlying biological pathology, mechanism and cause (302).” To diagnose a patient as suffering from a mental disorder, for McHugh and Slavney (48), is to label them in a way that we judge helpful as a starting point for investigating physical processes.

ie first step take a cogntion test.

Now who could I be talking about?