Background: Although Attention Deficit-Hyperactivity Disorder (ADHD) is a common mental disorder among adults, until recently, it was seldom diagnosed in adults. The significance of this disorder as a disease afflicting adults is increasing on a daily basis due to the complications associated with it such as disrupting occupational and educational functionality, as well as increasing the probability of drug abuse among those suffering from it. With due regard to the significance of the subject. This study was conducted with the purpose of investigating the ADHD symptoms exhibited by students at Zahedan University of Medical Sciences. Methods: The present investigation is a descriptive-analytical study conducted at Zahedan Universitsy of Medical Sciences. The consensus sampling method was implemented to a sample volume consisting of 1000 persons. Based on the goals set in this research, two questionnaires were presented to the students to be completed arbitrarily: the demographic questionnaire and the Conners Adult ADHD Rating Scale Screening Version (CAARS-O:SV) questionnaire. The obtained information was then fed as input to the SPSS Software for analysis. Results: Of the 1000 questionnaires submitted to the students, 913 were completely answered: 589 (64.5%) by female and 324 (35.5%)