(a) Classification - defining something as a disorder or condition

(b) People that are exhibiting either physiological or physical distress that is attempting to be categorized

(c) Institutions - ranging from clinics, professional organizations, and the press

(d) Knowledge - the presumptions that are taught, disseminated, and refined within the context of the institution

(e) Experts or professionals who generate the knowledge, judge its validity and use it in their practice

Institutions (c ) grant these experts (e) legitimacy to place people (b) into classifications (a) that are based on existing institutional knowledge (d).