Abstract
Nowadays, each of mental disorders is conceptualized as a clinically significant behavioral or psychological syndrome or pattern that occurs in an individual and that is associated with present distress (e.g., a painful symptom) or disability (i.e., impairment in one or more important areas of functioning) or with a significantly increased risk of suffering death, pain, disability, or an important loss of freedom. Whatever its original causes, it must currently be considered a manifestation of a behavioral, psychological, or biological dysfunction in the individual. Therefore, it must be admitted that no definition adequately specifies precise boundaries for the concept of mental disorder. In other words, at the moment we do not have any objective methodology which can distinguish normal from abnormal in mental symptoms and/or measure psychological stress. Based on the facts, we will discuss the possibility of measurement of psychological stress using medical engineering techniques.
