Disability Studies is an interdisciplinary academic field concerned with the study of disabled people globally. Disability Studies also considers the social constructions of 'ability' and 'disability' and how this related to people society labels 'disabled'. For more information on how disability can be defined see the WHO's page here.
The following resources offer overviews of the field of Disability Studies:
Oxford Bibliographies provide an up-to-date overview of the most recent and authoritative scholarship in a given field. Although the following bibliographies are part of the Education and Childhood collections they have good overviews of Disability Studies as a discipline:
The Institute of Historical Research has an in-depth guide to History of Disability collections here.
Disability also intersects with other protected characteristics, cultures and communities. Oxford Bibliographies provide a guide to scholarship on Race and Disability here.