What is Depression?

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Understanding Depression

Depression (major depressive disorder) is a common and serious medical illness that negatively affects how you feel, the way you think and how you act. Fortunately, it is also treatable.

Depression causes feelings of sadness and/or a loss of interest in activities you once enjoyed. It can lead to a variety of emotional and physical problems and can decrease your ability to function at work and at home.

Key Symptoms

  • Persistent sad, anxious, or "empty" mood
  • Loss of interest or pleasure in hobbies and activities
  • Feelings of hopelessness or pessimism
  • Fatigue and decreased energy
  • Difficulty concentrating, remembering, or making decisions