Anhedonia:

grok:

"The essence of anhedonia is the inability or significantly reduced capacity to experience pleasure or enjoyment from activities that are typically rewarding or pleasurable. It’s a core feature of certain mental health conditions, most notably depression, but it can also appear in schizophrenia, substance use disorders, and other contexts. At its root, anhedonia reflects a disruption in the brain’s reward system—think dopamine pathways like the mesolimbic circuit—where the anticipation or consumption of enjoyable things (food, sex, social connection, music) no longer sparks the usual "feel-good" response."