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Depressive episode symptoms

Overwhelming sadness. Low energy and fatigue. Lack of motivation. Feelings of hopelessness. Loss of enjoyment of things. Difficulty concentrating and making decisions. Uncontrollable crying. Irritability. Increased need for sleep. Insomnia or excessive sleep. A change in appetite. Thoughts of death or suicide (suicidal ideation).

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Updated 2025-10-06

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Behavioral Neuroscience

Psychology

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Attention-Deficit Hyperactivity Disorder (ADHD)

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Diagnostic and Statistical Manual (DSM)

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Bipolar Disorder