This free eBook provides an overview on depression. Depression, also called "depressive disorder" or "clinical depression," is a common but serious mood disorder that causes severe symptoms that can affect how you feel, think, and handle daily activities, such as sleeping, eating, or working. The eBook contains information on the signs and symptoms of depression, treatment and support options, and a listing of additional resources. It is intended for informational purposes only and should not be considered a guide for making medical decisions. Please review this information and discuss it with your doctor or health care provider.  For more information on depression, schizophrenia, and other mental health disorders, please visit the NIMH website at nimh.nih.gov   This resource may appeal to patients and families, high school through adult.