<unk>  forms one of major criteria in the diagnosis of depression, but, it also seen in negative symptom of schizophrenia, psychosis.<unk>  is studies in neuropsychiatrie disorders, substance use disorder, parkinson's disease, overeating, and various risky behaviors.
Anhedonia causes
Delusional disorder causes
Amnesia causes
Anxiety causes
Bipolar disorder causes
Acute stress disorder causes
Fatigue causes
Tremor causes