TDCS Interventions for Subthreshold Depressive Symptoms in Young Individuals.

Exclusion Criteria

• •1\) Individuals with the following diagnoses according to DSM-5: psychiatric disorders due to organic diseases, substance-related and addictive disorders, neurodevelopmental disorders, schizophrenia spectrum and other psychotic disorders, bipolar disorder (assessed by K-SADS-PL);
• •2\) Have two or more DSM-V-defined manic symptoms for 4 days but do not meet the criteria for hypomania or meet the DSM-V defined criteria for hypomanic symptoms for only 2-3 days;
• •3\) Severe or unstable physical illness;
• •4\) have a moderate or higher risk of suicide (as assessed by the Columbia Suicide Severity Scale);
• •5\) Received transcranial direct current stimulation in the past three months (continuous intervention time: \>2 weeks);
• •6\) Contraindications to transcranial direct current stimulation, such as brain implants, personal or family history of epilepsy;
• •7\) Magnetic resonance scanning is contraindicated, such as in vivo metal implants.