Obsessive–compulsive disorder (OCD) symptoms have different cultural images in society. Deconstructive psychology studies can contribute to understanding the dominant discourse surrounding these patients, given the prevalence of OCD. The objective of this study was to investigate the discourse of participants regarding “having/receiving a diagnosis of OCD” and the function of this discourse. The research approach was qualitative and language-based, specifically employing Lacanian Discourse Analysis (LDA) perspective. The possible questions and prompts were determined along with the research team, and seven semi-structured interviews were conducted with six participants diagnosed with OCD. The interviews explored how participants referred to their diagnosis, the language they used, and the function of this discourse. The findings revealed that participants diagnosed with OCD insistently used the term “disease” to explain their peculiar and distressing situations, referring to “medical discourse” with expressions such as “This is a disease” and “This disorder.” Additionally, they often utilized “religious discourse” with the statements like “Disease has no sin” and “The sick and insane are exempt from their responsibilities.” The findings of the current research indicated that when individuals with OCD “receive a name” through a recognized diagnosis, they experience a sense of recognition and validation for their OCD-related problems. Consequently, individuals diagnosed with OCD tend to find “legitimacy” for their irrational or unwanted thoughts and behaviors by taking comfort from their diagnosis. This study provides valuable insights into an understanding of patients with OCD. The findings are discussed in the context of their implications for both theoretical and applied research.