Depressive disorder is one of the most common chronic mental disorders, with significant and persistent low mood as the main clinical symptom. The etiology and pathogenesis of depression are not clear, clinically can not be etiological diagnosis, nor hypertension and other diseases have objective and quantifiable indicators.
In 2020, the National Health Commission issued the Norms for the Diagnosis and Treatment of Mental Disorders (2020 Edition) (hereinafter referred to as the "Specifications") for clinical reference. There are strict diagnostic criteria for depression, but correspondingly, there is a shortage of child psychiatrists in the country.