Theophrastus (381-278 B.C.), was the first to adopt the term character for the description of distinct inner psychological and moral features of an individual. In his classic book 'Characters' in a simple style wording he analyses some of his contemporary individuals. The character "Αναίσθητος" (Anaisthetos) has been translated in English as "The Obtuse Man" and in Modern Greek both as "Αναίσθητος", meaning lack of appreciation and "Βραδύνους", meaning slowness of mind. Theophrastus' description of this particular character is compatible with the co-occurrence in an adult of two Neurodevelopmental Disorders: the Attention-Deficit Hyperactivity Disorder (ADHD) and the Social Pragmatic Communication Disorder (SPCD), according to the 5th Diagnostic and Statistical Manual of Mental Disorders. Ten out of the twelve statements support the possible occurrence of ADHD while five of them the occurrence of SPCD. The description does not justify a diagnosis of an intellectual disability; therefore, we consider that in the Modern Greek vocabulary the original term «Αναίσθητος» ("Anaisthetos"), meaning lack of appreciation, is more accurately corresponding to this particular Theophrastus's character than "Βραδύνους" ("Obtuse"), which indicates the presence of low intellectual capacities. Also the lack of repetitive and restrictive interests and behaviours excludes Autism Spectrum Disorder as a possible diagnosis. Minor psychiatric disorders and traits according to the Peripatic School were attributed to the lack of rational control over appetites and behavior. Accordingly, «Αναίσθητος» is a phenomenological description of a stigmatizing inappropriate social behavior and the only help that might give is in increasing self-awareness. In our contemporary clinical practice, though, the early recognition and appropriate treatment of Neurodevelopmental Disorders in affected individuals, leads to a better clinical care and may diminish stigmatization. The co-existence of these two disorders in a character in such a different historical context reinforces their validity as diagnostic constructs and provides an example of co-occurrence of Neurodevelopmental Disorders.
Keywords: Attention Deficit Hyperactivity Disorder adult; Anaisthetos; Neurodevelopmental Disorders; Obtuse Man; Social (Pragmatic) Communication Disorder; Theophrastus.