Depression is a common mental health disorder characterized by persistent feelings of sadness, hopelessness, and a loss of interest or pleasure in daily activities. It affects how a person feels, thinks, and behaves and can lead to a variety of emotional and physical problems. Depression can be triggered by life events, medical conditions, genetic factors, or chemical imbalances in the brain.

Symptoms

Symptoms of depression can vary in intensity and duration but often include:

• Persistent Sadness: Feeling sad, empty, or hopeless most of the day, nearly every day.
• Loss of Interest or Pleasure: No longer finding enjoyment in hobbies or activities once enjoyed.
• Changes in Appetite or Weight: Significant weight loss or gain unrelated to dieting.
• Sleep Disturbances: Insomnia or sleeping too much.
• Fatigue or Lack of Energy: Feeling tired or physically drained, even after rest.
• Feelings of Worthlessness or Guilt: Excessive self-blame or guilt over past events.
• Difficulty Concentrating: Trouble focusing, making decisions, or remembering things.
• Physical Aches or Pains: Headaches, digestive issues, or other unexplained physical symptoms.
• Thoughts of Death or Suicide: Recurrent thoughts of dying, self-harm, or suicide attempts.

Diagnosis

Healthcare professionals diagnose depression through a combination of evaluations:

• Clinical Interviews: Discussing symptoms, their duration, severity, and impact on daily life.
• Medical History: Reviewing any personal or family history of mental health conditions, trauma, or other medical issues.
• Psychological Assessments: Using standardized questionnaires like the Patient Health Questionnaire (PHQ-9) to measure symptom severity.
• Physical Examination and Lab Tests: To rule out medical conditions that could mimic or worsen depressive symptoms, such as thyroid disorders or vitamin deficiencies.
• Diagnostic Criteria: Based on guidelines from the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), which specify at least five symptoms persisting for two weeks or longer, including either depressed mood or loss of interest.