The Pathogenesis and Medical Treatment of Depression: Opportunity and Challenge

Depression is a common mental disorder with high economic burden, characterized by high disability and mortality rates. The etiology of depression remains unclear to date, and there are various hypotheses regarding the pathogenesis of depression in clinical practice, including the monoamine neurotransmitter hypothesis, the hypothalamic–pituitary–adrenal (HPA) axis dysregulation hypothesis, the inflammatory cytokine hypothesis, and the neurotrophic factor hypothesis. These theories offer specific directional aid in the clinical management of individuals suffering from depression. Medicinal intervention stands as a critical approach within the spectrum of depression treatments, and this article reviews the specific mechanisms of different hypotheses on the pathogenesis of depression in recent years, as well as the research progress on related therapeutic drugs.