You’re welcome! I hope you find the answers you want.
I’ll put some abstracts of scitific articles I found in ResearchGate:
Neuroleptic induced deficit syndrome:
Increasing interest in subjective aspects of therapy and rehabilitation focused the attention of psychiatrists, psychologists and psychopharmacologists on the mental side effects of neuroleptics. For the drug-related impairment of affective, cognitive and social function the name of neuroleptic-induced deficit syndrome (NIDS) is proposed. Patients with NIDS appear to be indifferent to the environmental stimuli, retarded and apathetic. They complain of feeling drugged and drowsy, weird, they suffer from lack of motivation, feel like “zombies”. The paper presents description of NIDS and its differentiation from negative and depressive symptoms in schizophrenia and subjective perceiving of extrapyramidal syndromes.
Neuroleptic-induced deficit syndrome in bipolar disorder with psychosis
Neuroleptics can induce not only physical adverse effects but also mental effects that produce deficit status in thought, affect, cognition, and behavior. This condition is known as neuroleptic-induced deficit syndrome (NIDS), which includes apathy, lack of initiative, anhedonia, indifference, blunted affect, and reduced insight into disease. Although this old concept now appears almost forgotten, neuroleptics, whether typical or atypical, can make depression or bipolar disorder resemble other more refractory conditions, readily leading to mistaken diagnosis and inappropriate treatment. The authors describe three cases of NIDS superimposed on depressive phase in bipolar disorder with psychosis, where the attending psychiatrist’s failure to recognize NIDS prevented patients from receiving effective treatment and achieving remission. All cases achieved remission after reduction of neuroleptics and intensive therapy, including electroconvulsive therapy, for bipolar depression. The concept of NIDS was originally introduced for schizophrenia, and it has rarely been highlighted in other diseases. In recent years, however, atypical antipsychotics are being more often administered to patients with bipolar disorder. Psychiatrists, therefore, should also remember and exercise caution regarding NIDS in the pharmacotherapy of bipolar disorder with and without psychosis. The authors believe that the concept of NIDS needs to be reappraised in current psychiatry.
Neuroleptic-induced deficit syndrome. Historical introduction
The treatment of psychotic illness has long been inextricably associated with society’s view in general on social deviance. In medieval times, psychotic individuals were contained within the community, a situation which still prevails in many developing countries. Aggregation of such patients in asylums followed the increasing industrialization of communities in the nineteenth century, when the ability of the disadvantaged of all kinds to survive was greatly jeopardized. The twentieth century has seen a gradual reversal of this process, as attitudes towards mentally ill people have become a little more enlightened and liberal. However, the swing against the great lunatic asylums of the last century has proceeded at such an administrative rate that our patients are again in danger of succumbing medically and economically within our communities. It is common to see desperately poor and damaged psychotic individuals on our streets. The advent of neuroleptics was a major factor in the change from a custodial to an ostensibly rehabilitative approach in the treatment of schizophrenia. However, classic neuroleptics have a long list of well-recognized side effects such as affective and cognitive impairment that lead to poor treatment compliance, psychiatric relapse and social decompensation, the state of affairs of our street psychotics. Treatments that lessen the probability of this unfortunate process are desperately needed. The introduction of new neuroleptic drugs with favourable side effect profiles is to be welcomed as a major step in increasing the quality of life of our patients, both in hospital and functioning in the community.