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Author Spotlight: Unveiling the Connection Between Sleep Disorders and Cognitive Symptoms in Depression
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Problematic Smartphone Use Is Associated With Current and Previous Major Depressive Disorder.

Su Jeong Seong1, Jin Pyo Hong2, Bong-Jin Hahm3,4

  • 1Department of Psychiatry, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea.

Psychiatry Investigation
|July 25, 2025
PubMed
Summary
This summary is machine-generated.

Major depressive disorder (MDD) increases the risk of problematic smartphone use (PSU), even after depression resolves. Past and current MDD episodes are linked to higher PSU rates in adults.

Keywords:
AddictionDepressionMental healthMobile phone addictionMood disorderSmartphone addiction

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Area of Science:

  • Psychiatry
  • Public Health
  • Digital Health

Background:

  • The relationship between depression and problematic smartphone use (PSU) is well-documented.
  • However, the temporal order of this association remains unclear.

Purpose of the Study:

  • To investigate the temporal relationship between current problematic smartphone use (PSU) and past/current major depressive disorder (MDD) in adults.

Main Methods:

  • Utilized data from the Korean Epidemiologic Catchment Area study (N=916).
  • Employed multistage cluster sampling.
  • Assessed MDD using the Korean Composite International Diagnostic Interview and PSU using the Smartphone Overuse Screening Questionnaire.

Main Results:

  • 15.2% of participants reported PSU.
  • Both current and previous major depressive disorder episodes were significantly associated with an increased risk of PSU.
  • PSU prevalence was notable in older adult age groups (9.3% in 36-50 years, 5.4% in >50 years).

Conclusions:

  • Confirmed the association between major depressive disorder (MDD) and problematic smartphone use (PSU) in the general adult population.
  • Established the precedence of MDD to PSU.
  • Found that even resolved depression influences current PSU.