The concept of physical and intellectual disability has experienced a series of changes and evolutions over time with regard to approach, classification and rehabilitation-therapeutic programs, since it contemplates a heterogeneous clinical phenomenology in terms of severity, complexity, pervasiveness and severity of the diagnosis. The significant repercussions on the quality of life mean that a comprehensive approach is required with attention to the physical, social, emotional, sensory and cognitive profile, and that there is a need for the adoption of classification systems and assessment tools that are different and in some ways pioneering, so as to guarantee the surpassing of the concept of disability as a "mere defect" physical and/or impairment and/or loss of psychological, physiological or anatomical function (Holden & Gitlesen 2003, Linden 2017, WHO 2001). It is exactly in contemplation of a bio-psycho-social model, that the International Classification of Functioning, Disability and Health (ICF) arises, which possesses a neutral position with respect to etiology and a complementarity with the ICD-10 classification (WHO 2001), since it allows the functional diagnosis (i.e. a specialized analytical description of the potential and deficits in relation to the pathology) proposing a detailed analysis of the possible social consequences of disability by evaluating the residual capacities and measuring the "social skills" (WHO 2001).