Environmental factors are frequently responsible for disability. The situation of disabled persons requires specific attention because of their total dependence vis-avis the environment. The problems posed by disabilities must not be minimised. According to WHO over 500 million individuals suffer from some form of disability. ILO estimates that 160 million of the disabled people are women and 140 million are children. A study conducted by the Special Rapporteur of the Sub-Commission has strengthened awareness of the human rights of the disabled persons and their special requirements.