Mood Emot 2021 Mar; 19(1): 17-23
ADHD and Its Comorbidities in College Students, with a Focus on Depression and Pathological Internet Use
Duk-Soo Moon , MD, PhD1, Na Ri Kang , MD, PhD1,2, Young-Eun Jung , MD, PhD1,2, Moon-Doo Kim , MD, PhD1,2
1Department of Psychiatry, Jeju National University Hospital, 2Department of Psychiatry, Jeju National University School of Medicine, Jeju, Korea
Correspondence to: Young-Eun Jung, MD, PhD
Department of Psychiatry, Jeju National University Hospital, 15 Aran 13-gil, Jeju 63241, Korea
TEL +82-64-717-1234 FAX +82-64-717-1849 E-mail ORCID
Received: September 29, 2020; Revised: November 18, 2020; Accepted: November 28, 2020; Published online: March 31, 2021.
© Korean Society for Affective Disorders. All rights reserved.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Background: There is growing interest in adult attention-deficit hyperactivity disorder (ADHD) because many ADHD children have symptoms that last through adulthood, and adult ADHD has a high risk of comorbid mental disorders. This study examined the prevalence and comorbidities of adult ADHD, with a focus on depression and pathological internet use among Korean college students.
Methods: This study included 1358 college students, who were asked to complete self-reporting questionnaires on their characteristics, ADHD symptoms, and related clinical factors. The study analyzed associations between ADHD and depression, anxiety, pathological internet use, and problematic alcohol use.
Results: The prevalence rate of ADHD among college students was 5.7%. A significant association was determined between ADHD symptoms and school satisfaction, depression, anxiety, and pathological internet use. Multivariate analysis showed that ADHD symptoms in college students were significantly associated with depression and pathological internet use.
Conclusion: The prevalence of ADHD among college students was similar to that of children and adolescents. Moreover, the risk of depression and pathological internet use was high in the ADHD group. Early screening and intervention for ADHD and comorbidities will be required to prevent the negative consequences of the condition and help students adapt in the future.
Keywords: Attention-deficit hyperactivity disorder; College students; Depression; Pathological internet use

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