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. 

Depression symptoms can vary from mild to severe and can include: 

  • Feeling sad or having a depressed mood 
  • Loss of interest or pleasure in activities once enjoyed 
  • Changes in appetite — weight loss or gain unrelated to dieting 
  • Trouble sleeping or sleeping too much 
  • Loss of energy or increased fatigue 
  • Increase in purposeless physical activity (e.g., inability to sit still, pacing, handwringing) or slowed movements or speech (these actions must be severe enough to be observable by others) 
  • Feeling worthless or guilty 
  • Difficulty thinking, concentrating or making decisions 
  • Thoughts of death or suicide 

Symptoms must last at least two weeks and must represent a change in your previous level of functioning for a diagnosis of depression. 

Also, medical conditions (e.g., thyroid problems, a brain tumor or vitamin deficiency) can mimic symptoms of depression so it is important to rule out general medical causes. 

 

 


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Resources:

  1. Depressive disorders. In: Diagnostic and Statistical Manual of Mental Disorders DSM-5. 5th ed. Arlington, Va.: American Psychiatric Association; 2013. http://www.psychiatryonline.org. Accessed Jan. 23, 2017.
  2. Depression. National Institute of Mental Health. https://www.nimh.nih.gov/health/topics/depression/index.shtml. Accessed Jan. 23, 2017.
  3. Depression. National Alliance on Mental Illness. http://www.nami.org/Learn-More/Mental-Health-Conditions/Depression/Overview. Accessed Jan. 23, 2017.
  4. Depression: What you need to know. National Institute of Mental Health. https://www.nimh.nih.gov/health/publications/depression-what-you-need-to-know/index.shtml. Accessed Jan. 23, 2017.
  5. What is depression? American Psychiatric Association. https://www.psychiatry.org/patients-families/depression/what-is-depression. Accessed Jan. 23, 2017.
  6. Depression. NIH Senior Health. https://nihseniorhealth.gov/depression/aboutdepression/01.html. Accessed Jan. 23, 2017.
  7. Children’s mental health: Anxiety and depression. Centers for Disease Control and Prevention. https://www.cdc.gov/childrensmentalhealth/depression.html#depression. Accessed. Jan. 23, 2017.
  8. Depression and complementary health approaches: What the science says. National Center for Complementary and Integrative Health. https://nccih.nih.gov/health/providers/digest/depression-science. Accessed Jan. 23, 2017.

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