4. Post-traumatic stress disorder
Although PTSD is associated with a significantly reduced level of motivation, it is also associated with elevated sensation seeking, together with no deficits in physiological arousal, or even self-reported pleasure to a range of positive stimuli.
PTSD is also associated with blunted affect or flat affect, which may be due to the high comorbidity with depression. PTSD is an extremely complex condition that can affect virtually anyone. A soldier returning from a warzone may experience PTSD that can eventually turn into anhedonia. But it is also true that a teenager or young person could exhibit signs of PTSD through some kind of vague memory of exposure to early trauma.
People who have lived through or witnessed accidents or serious incidents like terrorist attacks have also found themselves susceptible to the onset of PTSD. However it comes on and whoever it affects, it is clear that PTSD is a significant risk factor for the development of anhedonia in people of all different ages and from all kinds of backgrounds.