Linked from
The 12 pages that link to Anhedonia, each with the reason it gives.
DepressionBroader topic: Loss of interest or pleasure is one of depression’s defining symptoms.
Mood disorderRelated: It is a defining symptom in many depressive episodes.
DysthymiaRelated: It is a common depressive symptom, though low mood can predominate in dysthymia.
AlogiaRelated: It is another negative symptom, distinct from alogia but often assessed alongside it.