In patients who wish to modify the nasal appearance through rhinoplasty, the state of mental health is important, as patients with psychopathologies related to body image distortion have high rates of dissatisfaction with the surgical result. This research becomes relevant, as it aims to assess the prevalence of Body Dysmorphic Disorder (BDD) in candidates for rhinoplasty through the application of questionnaires, the Yale-Brown Obsessive Compulsive Scale modified for Body Dysmorphic Disorder (BDD- YBOCS) and Body Dysmorphic Symptoms Scale (BDSS), in its validated version for Portuguese, that is, Corporal Dysmorphism Symptoms Scale, and through preoperative 2D simulation guided by the patient’s desire, analyzes whether there is a correlation between the scores obtained in the questionnaires with the intensity of the nasal change desired by the patient, that is, whether patients who are candidates for rhinoplasty with positive screening or higher scores in the BDD questionnaires present greater self-image distortion during the 2D simulation when compared to patients with negative screening for BDD. The survey was applied to 28 volunteer participants at Hospital Paranaense de Otorrinolaringologia IPO in Curitiba. It was found that the female public was the one that most presented complaints related to nasal aesthetics, there were 19 female participants (67.9%) and 9 male participants (32.1%). The average age was 29 years. It was found that 3 participants (10.7%) were screened positive for BDD. There was a direct correlation between higher scores on the BDSS questionnaire and greater changes in the nasolabial angle (p 0.043) and nasofrontal angle (p 0.048) variables, while the BDD-YBOCS questionnaire showed a direct correlation between higher scores on the questionnaire and greater changes only in the nasolabial angle variable (p 0.026). It was concluded that the prevalence of BDD in rhinoplasty candidates was 10.7% and that patients with positive screening or higher scores in the questionnaires presented greater self-image distortion during the 2D simulation, as they wanted more intense changes in nasal aesthetics as when compared with patients who screened negative for BDD.