This video describes the term “anhedonia.” Anhedonia is from the Greek and means “without pleasure.” It is characterized by a loss of interest in activities. Physical anhedonia is characterized by diminished pleasure in food, sex, hobbies, work-related activities, etc. Social anhedonia is characterized by diminished pleasure in social activities. Anticipatory anhedonia is when the pleasure of anticipation is diminished. Consummatory anhedonia is a reduction in enjoyment during the actual time of consumption. Anhedonia is a key component of several mental disorders including Major Depressive Disorder, Bipolar Disorder, Schizophrenia, Substance Use Disorder, and PTSD.