Is depression one thing or many?

MeSH terms

• Adult
• Antidepressive Agents / therapeutic use
• Bipolar Disorder / classification*
• Bipolar Disorder / diagnosis*
• Bipolar Disorder / drug therapy
• Depressive Disorder, Major / classification*
• Depressive Disorder, Major / diagnosis*
• Depressive Disorder, Major / drug therapy
• Diagnostic and Statistical Manual of Mental Disorders
• Female
• Humans
• Lithium Compounds / therapeutic use
• Recurrence