Psychotic Disorders in the Elderly: Diagnosis, Epidemiology, and Treatment.

This review covers the latest advances in our understanding of psychosis in the elderly population with respect to diagnosis, epidemiology, and treatment. Major topics of discussion include late life psychiatric disorders such as schizophrenia, schizoaffective disorder, and delusional disorder as well as dementia-related psychosis. Clinical differences between early-onset and late-onset disorders are reviewed in terms of prevalence, symptomatology, and approach to treatment. Newly revised research and clinical criteria for dementia-related psychosis are referenced. The evidence base for emerging therapies including citalopram and pimavanserin in relation to conventional therapies such as atypical antipsychotics are discussed..

Psychotic Disorders in the Course of SARS-CoV-2 Infection or Uncomplicated Amantadine Treatment?-Case Report.

The mental health impact of SARS-CoV-2 infection is currently the subject of intense research. Mental disorders in the course of coronavirus infection are non-specific. They most often have a sudden onset and short-term course and resolve spontaneously or after the administration of low doses of antipsychotic drugs. At the same time, attempts have been made to develop recommendations for COVID-19 therapy. Single reports suggest the effectiveness of amantadine in the treatment. The mechanism of action of the drug in this case is not known; it is expected that amantadine, by reducing the expression of the cathepsin L gene, may interfere with SARS-CoV-2 replication. In addition, this drug stimulates dopaminergic transmission, which may result in numerous side effects, often of a neuropsychological nature, the most common of which are visual hallucinations. Therefore, it is extremely difficult to unequivocally diagnose the cause of mental disorders among patients with SARS-CoV-2 infection who took amatatide for off-label treatment. A clear assessment of whether the psychological symptoms in this group of patients are the primary or secondary clinical manifestation of the infection or a complication of amantadine treatment is difficult. In this context, we attempted to describe a case of a patient with psychotic symptoms who was confirmed with SARS-CoV-2 infection and treated with amantadine.

The effect of the COVID-19 pandemic on health behavior and psychopathology in patients with psychotic disorders.

In our study we aimed to investigate the effect of the pandemic period on disease severity, medication adherence, suicidal behavior, physical health and health behavior in patients with psychotic disorders. 255 patients with any of the diagnoses of Schizophrenia, Schizoaffective Disorder, Delusional Disorder, Bipolar Disorder with psychotic features and Major Depressive Disorder with psychotic features were included, 200 were assessed by telephone and 55 face-to-face. The patient's sociodemographic status, cigarette-alcohol use, physical diseases, body weight, suicidal behaviors, and the effects of the pandemic period on general health were assessed. Clinical global impression scale(CGI) and modified medication adherence scale(MMS) were also administered. We showed that the MMS scores of the patients significantly decreased compared to the pre-pandemic period. In our study, suicidal behavior and decrease in medication adherence during the pandemic period were found to be correlated with higher scores of CGI- Severity and Improvement Scale. Our study is one of the few studies that addresses the effects of the pandemic period on patients with psychotic disorders. The results show that the pandemic period is associated with an increase in negative health behavior and clinical worsening in patients with psychotic disorders. In order to confirm these findings, more research is needed in this area.

Baclofen Withdrawal-Induced Psychosis in the Setting of Renal Insufficiency.

Baclofen is used to treat muscle spasticity, acting at GABA B receptors in the central nervous system. The abrupt cessation of baclofen causes baclofen withdrawal-induced psychosis. The risk is exacerbated if the patient has renal insufficiency or if the drug has been taken for a long time at high doses. Gradual tapering of baclofen usually does not produce symptomatic adverse effects. However, abrupt termination of the drug, especially in an inpatient hospital setting, can lead to symptoms such as increased spasticity, agitation, confusion, hallucinations, and seizures. We present a case of a patient who initially presented with seizures and experienced hallucinations after abrupt cessation of the medication. She had baseline chronic kidney disease but presented with acute worsening of her renal function. Impaired renal function decreases baclofen clearance and causes increased concentration of baclofen in circulation. This put the patient at higher risk of developing baclofen withdrawal, even at a lower dose.

Psychosis during the COVID-19 pandemic: A systematic review of case reports and case series.

BACKGROUND: Preliminary data suggest that patients with COVID-19 may experience psychiatric symptoms, including psychosis. We systematically reviewed the literature to evaluate the concurrence of new-onset psychosis or exacerbation of clinically stable psychosis through case reports and case series. METHODS: Six databases were searched, followed by an electronic and manual search of the relevant articles. Studies were identified using predetermined eligibility criteria. We evaluated the demographic characteristics, clinical history, course of illness, management, and prognosis of the patients in these studies. RESULTS: Case reports and case series, altogether consisting of 57 unique cases were included. The mean patient age for onset of psychotic symptoms was 43.4 years for men and 40.3 years for women. About 69% of patients had no prior history of psychiatric disorders. Most patients had mild COVID-19-related symptoms, with only 15 (26.3%) presenting with moderate to severe COVID-19-related disease and complications. The most commonly reported psychotic symptoms were delusions and hallucinations. Patients with psychotic symptoms were treated with antipsychotics, benzodiazepines, valproic acid, and electroconvulsive treatment. In 36 cases, psychotic symptoms resolved completely or improved significantly. Ten cases had partial improvement with residual psychotic symptoms, and one patient died due to cardiac arrest. CONCLUSION: Most patients responded to a low-to-moderate dose of antipsychotics with a quick recovery. However, the residual psychiatric symptoms highlight the need for careful monitoring and longer follow-up. Clinicians should be mindful of the occurrence of psychosis due to COVID-19 infection in a subset of COVID-19 patients that can be misdiagnosed as a psychotic disorder alone.

Clozapine Use in a Movement Disorder Clinic.

BACKGROUND: Clozapine is an effective antipsychotic for Parkinson's disease (PD) that does not worsen motor function and can improve tremor. It is approved for PD psychosis in Europe and Australia. OBJECTIVE: The aim of this study was to report on the use of clozapine in a movement disorder clinic. METHODS: We report on patients monitored during the COVID-19 pandemic in clinic over a 7-month period. RESULTS: Sixty-five patients were seen, of whom 50 had PD. Thirty-one were treated for psychosis, 18 for refractory tremor and 1 for levodopa dyskinesias. The remainder had psychotic symptoms with dementia with Lewy bodies (n = 2) or other movement disorders. Four had clozapine discontinued because of sedation and 1 for agranulocytosis. Three had clozapine temporarily halted because of granulocytopenia but were rechallenged successfully. CONCLUSIONS: When comparing clozapine use in this clinic as compared with others, we deduce that clozapine is likely significantly underutilized in the United States.

Coronavirus disease 2019 presenting as psychosis: a case report.

BACKGROUND: The coronavirus disease 2019 syndrome typically consists of respiratory symptoms and other general nonspecific symptoms. Psychotic manifestations of coronavirus disease 2019 attributable to severe acute respiratory syndrome coronavirus 2 infection are seldom reported. We report a case of coronavirus disease 2019 in a young West African male who had no known risk factors of psychiatric illness or past history of psychiatric disease presenting with acute psychosis. CASE PRESENTATION: Our patient, who was a young West African male, presented without the typical respiratory symptoms of coronavirus disease 2019 and also without a background history of psychiatric illness or any other significant stressors in his past or present social history. He had acute onset of psychotic symptoms consisting of visual and auditory hallucinations, delusions of persecution, and lack of insight. He was admitted and managed with antipsychotic medication and mood stabilizer. His laboratory workup was normal except for positive coronavirus disease 2019 polymerase chain reaction and his liver enzymes, which showed elevated gamma glutamyl transferase, a finding consistent with coronavirus disease 2019. His head computed tomography scan was also normal. The patient made a gradual recovery from his psychotic symptoms, with gain of insight 7 weeks after onset of symptoms, at which time his coronavirus disease 2019 test came back negative along with other laboratory parameters. He returned to work 12 weeks after his presentation and has been performing well. CONCLUSION: Psychosis can be a primary presenting symptom in patients with coronavirus disease 2019, including those without respiratory symptoms.

A qualitative analysis of literature reporting and linking psychosis to COVID-19 infection. Findings from a postgraduate journal club.

Acute exacerbations of psychosis have been reported with COVID-19 infection and medications used for its treatment. Terms "psychosis", "psychotic", "COVID-19″ and "coronavirus" were searched on "PubMed" and "GOOGLE SCHOLAR", yielding 84 articles. 14 case reports were selected based on pre-defined criteria and analyzed. Among selected articles,10 attributed psychosis to COVID-19 infection. In 3 articles, psychosis was diagnosed despite concurrent delirium. In 8 and 3 articles respectively, a clear temporal demarcation of psychosis and COVID-19 infection and steroid use was not described. Psychosis can occur secondary to GMC, or exposure to medication. Due process should be followed to ascertain the same. INTRODUCTION: Neurotropic coronavirus infection is associated with numerous neurological and neuropsychiatric manifestations. Such presentations before, during and after the infection have been reported. Among these presentations, acute exacerbations of psychosis have been reportedly linked with COVID-19 infection and medications used for its treatment. METHODOLOGY: Search engines "PubMed" AND "GOOGLE SCHOLAR" were searched using specific search terms during June 2021. Out of 84 articles that came up, we selected 14 articles based on pre-determined inclusion and exclusion criteria. Selected articles were analysed and discussed in the departmental journal club. RESULTS: In 10 articles, diagnosis of psychosis was attributed to COVID-19 infection. In 3 of those articles, despite reporting concurrent delirium like presentation, diagnosis was still reported as psychosis. In 8 articles, the temporal correlation between onset of psychosis, onset of COVID-19 was not clearly demarcated. In 3 articles, clear demarcation between psychosis associated with steroid use and with a general medical condition (COVID-19) was not clearly presented. Only 2 articles did mention using a structured diagnostic system. In patients (3/17) with prior history of psychiatric illness, diagnosis was reported as relapse of psychosis (2/17), without specifying the criteria used for diagnosing a relapse. CONCLUSION: Acute exacerbation of psychosis can occur secondary to a general medical condition (GMC), or after exposure to a medication. However, due process should be followed to ascertain that the psychosis is indeed secondary to a GMC, or a medication, and not a de-novo presentation, or delirium.

Acute-Onset Psychosis Following Prolonged Hospitalization for COVID-19 Pneumonia.

BACKGROUND SARS-CoV-2 infection presents with a variety of clinical manifestations, from asymptomatic courses to prolonged hospitalizations with severe systemic inflammatory responses and multiorgan failure. One particular sequela of the disease that has gained wider attention over the past year is the sudden onset of neuropsychiatric symptoms in the weeks following recovery from COVID-19 pneumonia. While the pathophysiology for the development of this condition is uncertain, symptoms ranging from mild confusion and anxiety to florid psychosis with manic delusions and auditory and visual hallucinations have been rarely, but increasingly, reported in the literature. The acute development of such symptoms in the post-recovery period can be devastating for patients, their caregivers, and clinicians who may be unaware of effective management options. CASE REPORT In this case report, we present a 23-year old man who developed psychotic symptoms, including acute mania, delusions of grandeur, and auditory and visual hallucinations, 1 week following an extended hospitalization for COVID-19 pneumonia. The patient was admitted to our psychiatric unit and treated with a combination of antipsychotic and mood stabilizer medications. After 2 weeks of treatment, the patient's psychotic and mood-related symptoms resolved, with normal mental status maintained at last follow-up 1 month following discharge from our unit. CONCLUSIONS The acute development of neuropsychiatric symptoms is a rare but increasingly recognized sequela of COVID-19. Despite the severity of initial presentation, patients can be successfully treated with short courses of typical antipsychotic medications with complete return to baseline, unimpaired functioning, and no lingering psychiatric sequela.

Onset psychosis and PTSS after severe respiratory symptomatology caused by SARS-CoV-2 infection: a case report.

Covid-19 is an infective respiratory illness caused by a novel virus, which might present different degrees of severity: from mild or even asymptomatic carriers to severe pneumonia, requiring intubation and intensive care unit (ICU) management. SARS-CoV-2 may cause also central nervous system involvement, including psychiatric manifestations. Some cases of psychosis apparently covid-related have been reported since the start of the pandemic; we will briefly review some of them here, then we will report a case concerning a patient with emerging psychosis during the disease caused by the virus. Our case describes a man with no prior personal or familiar psychiatric history, who developed delusion and a post-traumatic stress symptoms (PTSS) which required hospitalization in a psychiatric unit. The patient was treated with antipsychotic medications and underwent a brief follow-up.

COVID-related hospitalization, intensive care treatment, and all-cause mortality in patients with psychosis and treated with clozapine.

Clozapine, an antipsychotic, is associated with increased susceptibility to infection with COVID-19, compared to other antipsychotics. Here, we investigate associations between clozapine treatment and increased risk of adverse outcomes of COVID-19, namely COVID-related hospitalisation, intensive care treatment, and death, amongst patients taking antipsychotics with schizophrenia-spectrum disorders. Using the clinical records of South London and Maudsley NHS Foundation Trust, we identified 157 individuals who had an ICD-10 diagnosis of schizophrenia-spectrum disorders, were taking antipsychotics (clozapine or other antipsychotics) at the time of COVID-19 pandemic in the UK and had a laboratory-confirmed COVID-19 infection. The following health outcomes were measured: COVID-related hospitalisation, COVID-related intensive care treatment and death. We tested associations between clozapine treatment and each outcome using logistic regression models, adjusting for gender, age, ethnicity, neighbourhood deprivation, obesity, smoking status, diabetes, asthma, bronchitis and hypertension using propensity scores. Of the 157 individuals who developed COVID-19 while on antipsychotics (clozapine or other antipsychotics), there were 28% COVID-related hospitalisations, 8% COVID-related intensive care treatments and 8% deaths of any cause during the 28 days follow-up period. amongst those taking clozapine, there were 25% COVID-related hospitalisations, 7% COVID-related intensive care treatments and 7% deaths. In both unadjusted and adjusted analyses, we found no significant association between clozapine and any of the outcomes. Thus, we found no evidence that patients with clozapine treatment at time of COVID-19 infection had increased risk of hospitalisation, intensive care treatment or death, compared to non-clozapine antipsychotic-treated patients. However, further research should be considered in larger samples to confirm this.

A Double-Edged Sword: Thioxanthenes Act on Both the Mind and the Microbiome.

The rising tide of antibacterial drug resistance has given rise to the virtual elimination of numerous erstwhile antibiotics, intensifying the urgent demand for novel agents. A number of drugs have been found to possess potent antimicrobial action during the past several years and have the potential to supplement or even replace the antibiotics. Many of these 'non-antibiotics', as they are referred to, belong to the widely used class of neuroleptics, the phenothiazines. Another chemically and pharmacologically related class is the thioxanthenes, differing in that the aromatic N of the central phenothiazine ring has been replaced by a C atom. Such "carbon-analogues" were primarily synthesized with the hope that these would be devoid of some of the toxic effects of phenothiazines. Intensive studies on syntheses, as well as chemical and pharmacological properties of thioxanthenes, were initiated in the late 1950s. Although a rather close parallelism with respect to structure activity relationships could be observed between phenothiazines and thioxanthenes; several thioxanthenes were synthesized in pharmaceutical industries and applied for human use as neuroleptics. Antibacterial activities of thioxanthenes came to be recognized in the early 1980s in Europe. During the following years, many of these drugs were found not only to be antibacterial agents but also to possess anti-mycobacterial, antiviral (including anti-HIV and anti-SARS-CoV-2) and anti-parasitic properties. Thus, this group of drugs, which has an inhibitory effect on the growth of a wide variety of microorganisms, needs to be explored for syntheses of novel antimicrobial agents. The purpose of this review is to summarize the neuroleptic and antimicrobial properties of this exciting group of bioactive molecules with a goal of identifying potential structures worthy of future exploration.

COVID-Related Psychosis in Adolescents: A Case-Based Review.

Despite several reports of the neuropsychiatric effects of coronavirus disease 2019 (COVID-19) in older adults, only a few cases of COVID-related psychosis have been reported in young patients. This case-based review compares the clinical presentations of 2 previously published cases of adolescent patients who developed psychosis in the context of COVID-related complications with a new case of a male adolescent who developed post-COVID psychosis. A discussion to raise clinicians' awareness of COVID-related psychosis in young patients as well as the need for cautious use of antipsychotic medications in this highly vulnerable age group is also provided.