The article raises the issue of research in artistic expression and creativity used in therapy. Such research requires an interdisciplinary approach combining the humanities (art studies) and the social studies (pedagogy, psychology, sociology), which causes issues with implementing a consistent research perspective. The author points out a few issues, called “sensitive areas”, and analyses them in relation to the disabled people theatre. These are: the presentation status of such groups, the dangers of subjectivism or the necessity of implementing the qualitative research model, the methods of research documentation.