Understanding Major Depressive Disorder also referred to as Clinical Depression
Depression is one of the most common mental disorders in the U.S. Current research suggests that depression is caused by a combination of genetic, biological, environmental, and psychological factors.
Depression can happen at any age, but often begins in adulthood. Depression is now recognized as occurring in children and adolescents, although it sometimes presents with more prominent irritability than low mood. Many chronic mood and anxiety disorders in adults begin as high levels of anxiety in children.
Risk factors include:
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Personal or family history of depression
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Major life changes, trauma, or stress
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Certain physical illnesses and medications