Effectiveness of long-acting risperidone in a patient with comorbid intellectual disability, catatonic schizophrenia, and oneiroid syndrome

A Case of Undiagnosed Schizophrenia With Catatonia in a Hispanic Adolescent: The Significance of Social Determinants in the Diagnosis and the Efficacy of Risperidone and Lorazepam in Treatment

Catatonia is a potentially life-threatening motor dysregulation syndrome associated with various psychiatric, medical, or developmental conditions. It is not uncommon but rarely described in the pediatric population. The timely identification of catatonia is essential as the treatment approach differs from the differential diagnoses and possible underlying conditions. The social determinants of health are factors that may negatively impact psychological well-being, increase the risk and prevalence of mental disorders, and deteriorate the prognosis for those who already have them. The comprehension of social determinants of health is essential because it provides a deeper understanding of the complexity of societal structures and how they influence the lives of children and families. This case demonstrates how social determinants of health may contribute to misdiagnosis, delayed diagnosis, and an increase in the incidence of mental health disorders. We present a case report on a Hispanic adolescent with first-episode catatonia in the presence of disorganized, psychotic thoughts. The patient was successfully treated with the lorazepam challenge in conjunction with Risperidone M-Tab treatment in three days. The origin of catatonia was rooted in undiagnosed schizophrenia that had worsened over a year originating from a first-episode break that questions an untreated substance-induced psychosis: the substance is unknown, as her parents had not brought her to the emergency department at that time. The demographics of this patient have also placed her at risk for a lack of access and sociocultural aspects in the delay of treatment. Through this case report, we aim to highlight some critical points in diagnosing and managing nonmalignant catatonia in a demographically underserved minority adolescent female. This report emphasizes the need for more data about the etiology and treatment of catatonia, especially in the pediatric population.

Alternative treatment strategies for catatonia: A systematic review

BACKGROUND

Catatonia is a commonly encountered syndrome, affecting 10-20% of various psychiatric populations and carrying significant medical co-morbidities. However, there are few established alternative treatment strategies when benzodiazepines are ineffective and electroconvulsive therapy is unavailable.

OBJECTIVE

The authors systematically review evidence for alternative treatment strategies for catatonia using Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines.

METHOD

The authors conducted a search of PubMed database from 1983 to August 2016 to identify articles. Eligible reports presented cases involving treatment of catatonia using modalities other than benzodiazepines or electroconvulsive therapy.

RESULTS

The authors identified 72 articles, comprising 98 individual cases. N-methyl-d-aspartate-receptor antagonists, anti-epileptic drugs, and atypical antipsychotic agents appeared to have the largest number of reports supporting their effectiveness and safety in treating catatonia patients.

CONCLUSIONS

Based on the case report literature, the authors propose an updated algorithm for catatonia treatment in cases where benzodiazepines fail and electroconvulsive therapy is not available.

Potential link between genetic polymorphisms of catechol-O-methyltransferase and dopamine receptors and treatment efficacy of risperidone on schizophrenia

OBJECTIVE

The current study aimed to explore the association of single nucleotide polymorphisms (SNPs) within catechol-O-methyltransferase (COMT) and dopamine receptors with schizophrenia and genetic association with risperidone treatment response.

METHODS

A total of 690 schizophrenic patients (case group) were selected and 430 healthy people were included as the controls. All patients received risperidone treatment continuously for 8 weeks. Next, peripheral venous blood samples were collected and were subjected to polymerase chain reaction-restriction fragment length polymorphism to amplify and genotype the SNPs within COMT and dopamine receptors. Then, correlation analysis was conducted between Positive and Negative Syndrome Scale improvement rates and SNPs within COMT and the dopamine receptor gene.

RESULTS

The allele of DRD1 rs11749676 (A) emerged as a key element in reducing schizophrenia risk with statistical significance (P<0.001). Remarkably, alleles of COMT rs165774 (G), DRD2 rs6277 (T), and DRD3 rs6280 (C) were associated with raised predisposition to schizophrenia (all P<0.001). Regarding DRD1 rs11746641, DRD1 rs11749676, DRD2 rs6277, and DRD3 rs6280, the case group exhibited a lesser frequency of heterozygotes in comparison with wild homozygotes genotype (all P<0.001). SNPs (COMT rs4680, DRD2 rs6275, DRD2 rs1801028, and DRD2 rs6277) were remarkably associated with improvement rates of PANSS total scores (P<0.05). SNPs (COMT rs165599 and DRD2 rs1801028) were significantly associated with risperidone efficacy on negative symptoms (P<0.05).

CONCLUSION

COMT SNPs and dopamine receptor SNPs were correlated with prevalence of schizophrenia and risperidone treatment efficacy of schizophrenia.