Therapeutic targets in late-life psychoses: review of concepts and critical issues

Identifying elders with neuropsychiatric problems in a clinical setting

OBJECTIVE

Multiple health problems among the elderly necessitate a comprehensive enquiry to detect problems early and also initiate treatment. We utilized available validated instruments to comprehensively identify older persons with neuro-psychiatric problems including dementia and comorbid medical ailments in the screening desk of the geriatric clinic.

MATERIALS AND METHODS

Individuals aged 60 years and above seeking outpatient care at NIMHANS during a 2-year period (October 2008-September 2010) participated. We used General Health Questionnaire (12-item), AD8, questions to identify psychoses and neurological problems and a checklist of common medical ailments. A probable clinical diagnosis was made at the end by medical personnel based on ICD-10.

RESULTS

A total of 5,260 individuals were screened and more than one-third (36.7%) were women. About 50% had psychological distress (≥2 on GHQ-12), 20.1% had probable cognitive impairment (≥2 on AD8) and about 17% had symptoms suggestive of psychoses (≥1 on Psychoses screener). More than 65% had either a neurological or neurosurgical problems (≥1 on Neurological screener) and headache was the commonest complaint. At probable diagnosis, more than 50% had a neurological problem and over 30% had psychiatric disorders. Of these the most common psychiatric illnesses were psychotic disorders (22.0%), mood disorders (21.4%) and dementia (14.4%). The most common medical comorbidity included hypertension (36.4%), visual impairment (31.8%) and joint pains (30.5%). Nearly 80% had one or more medical comorbidity in addition to psychiatric illness. The overall set of instruments took about 15-20 minutes. It systematically and comprehensively guided in evaluating the elderly for neuropsychiatric problems and hence was collated to constitute the Instruments for Comprehensive Evaluation of the Elderly (ICE-E).

CONCLUSIONS

ICE-E was brief, easy to administer and improved decision making even by personnel from a non-medical background. The instrument aided in systematically detecting neuro-psychiatric problems among the elderly (including psychological distress and cognitive changes) and other medical comorbidities.

First-onset functional brief psychoses in the elderly

Background and Purpose

The origin and nosological status of psychotic states first arising in late life remain uncertain. We aimed to evaluate the diagnostic stability of brief psychoses with late-life onset.

Methods

A 10-year retrospective analysis of all records of elderly patients with a first-ever episode of psychosis was undertaken.

Results

Of 2,072 admissions of elderly patients, 604 had their first brief psychotic disorder (International Classification of Diseases diagnoses). All “organic” psychoses were excluded. The study sample comprised 83 individuals (36 male, 47 female) with a mean ± SD age of 75.4±9.3 years (range: 65–92). Mean follow-up duration was 27.7 months (range: 6–120). Distribution of diagnoses was as follows: unspecified nonorganic psychosis (n = 71); persistent delusional disorder (n = 10); other nonorganic psychosis (n = 1); and acute and transient psychotic disorder (n = 1). At follow-up, diagnosis of very late-onset schizophrenia-like psychosis and switch to another brief psychotic disorder were the most frequent outcomes.

Conclusions

The diagnosis of a nonorganic psychosis first manifesting in the elderly is not rare in tertiary care. Diagnostic shift at follow-up of these patients is more common than conceptualized, requiring flexibility on the part of treating physicians.

Adenosine A(2A) receptors in psychopharmacology: modulators of behavior, mood and cognition

The adenosine A(2A) receptor (A(2A)R) is in the center of a neuromodulatory network affecting a wide range of neuropsychiatric functions by interacting with and integrating several neurotransmitter systems, especially dopaminergic and glutamatergic neurotransmission. These interactions and integrations occur at multiple levels, including (1) direct receptor- receptor cross-talk at the cell membrane, (2) intracellular second messenger systems, (3) trans-synaptic actions via striatal collaterals or interneurons in the striatum, (4) and interactions at the network level of the basal ganglia. Consequently, A(2A)Rs constitute a novel target to modulate various psychiatric conditions. In the present review we will first summarize the molecular interaction of adenosine receptors with other neurotransmitter systems and then discuss the potential applications of A(2A)R agonists and antagonists in physiological and pathophysiological conditions, such as psychostimulant action, drug addiction, anxiety, depression, schizophrenia and learning and memory.

Psychiatric Emergencies in the Elderly Population

This article reviews the most common behavioral emergencies in the geriatric population. Psychiatric emergencies are seen frequently by emergency physicians who face the challenge of assessing and managing patients presenting with psychosis, severe depression, agitation, suicidal intent, and substance abuse in the emergency department. The evaluation is frequently complicated by the necessity to investigate numerous domains such as underlying medical conditions, prior psychiatric disorders and substance abuse, as well as psychosocial factors. It is crucial to rule out organic causes for what appears to be psychiatric disease in the elderly. The assessment might be further complicated by the patient's limited ability to recall pertinent aspects of the history due to either cognitive impairment or acute distress. Emergency department personnel might have inadequate expertise in assessing emergencies in elderly persons, further impeding the ability to appropriately manage behavioral complications in geriatric patients. Availability of high-quality emergency care and tight collaboration with primary care providers, psychiatric consultants, and social services is crucial to optimal outcomes from acute psychiatric decompensations in the elderly.

Erotomania : epidemiology and management

Erotomania is generally classified as a delusional disorder in contemporary classification systems (DSM-IV and ICD-10). The incidence of erotomania is not known, but that of delusional disorder in general has been reported as approximately 15 cases per 100,000 of the population per year, with a female : male ratio of 3 : 1. Both primary and secondary types of erotomania have been identified, the latter being associated with evidence of an aetiologically significant organic or psychiatric condition. The aetiology of primary erotomania is not yet fully understood, but neuroimaging, genetic studies and findings from evolutionary psychopathology hold considerable promise for a deeper and broader understanding of this condition. The initial management of secondary erotomania focuses on treating the underlying organic or psychiatric illness. The management of primary and secondary erotomania involves a combination of pharmacological treatments, psychosocial interventions and risk management strategies. In the past, the antipsychotic medication pimozide was commonly used, at least in certain countries (such as the US and Canada), despite a paucity of systematic studies of its use in this disorder. In recent years, there have been reports of positive therapeutic outcomes with atypical antipsychotics (risperidone, clozapine), which, as a result of their improved tolerability over older agents such as pimozide, will hopefully enhance patient acceptability and, thereby, improve clinical outcome. Despite this advance, there is still a strong need for controlled clinical trials of therapeutic strategies for primary erotomania and related syndromes.

Evidence-based practices in geriatric mental health care: an overview of systematic reviews and meta-analyses

At least 20% of people over the age of 65 suffer from mental disorders. It is anticipated that the number of older Americans with psychiatric disorders will double over the next 30 years. There is, however, substantial unmet need. The recent Surgeon General's Report on Mental Health, a Report on Mental Health from the Administration on Aging, and an expert consensus statement underscore the need to plan for the challenge of providing services for elderly people with major mental disorders. Among the greatest challenges is the expertise gap that affects clinicians practicing in routine clinical settings. This gap reflects inadequate training in geriatrics and a failure to incorporate contemporary clinical research findings and known evidence-based practices (EBPs) into usual care. This article provides an overview of the emerging evidence-base supporting the efficacy of empirically-validated geriatric mental health interventions for major geriatric mental health disorders, including systematic EBP reviews, meta-analytic studies, and expert consensus statements. Cautions and limitations regarding the reliance on randomized, controlled trials, meta-analyses, and systematic reviews also are presented.