Rethinking Psychosis Prevention: Are 'At-Risk' Mental State Clinics Missing the Mark?
"Experts are questioning whether specialized ARMS clinics are the most effective way to prevent psychosis, advocating for broader public health strategies focused on known risk factors."
For decades, mental health professionals have pursued the goal of preventing psychosis, a condition that can significantly impact a person's life. Early intervention (EI) services emerged as a promising strategy, aiming to improve long-term outcomes for individuals experiencing their first episode of psychosis (FEP). These services, like the Lambeth Early Onset (LEO) team and OPUS, have shown encouraging results, leading to their widespread adoption.
Building on this momentum, researchers developed specific clinical criteria to identify individuals at high clinical risk of developing psychosis, known as the At-Risk Mental State (ARMS). The idea was that by identifying and supporting these individuals, a substantial proportion could be prevented from transitioning to clinical psychosis. This led to the creation of specialized ARMS clinics in many countries, offering targeted interventions to young people deemed at ultra-high risk (UHR).
But are ARMS clinics the most effective way to tackle psychosis prevention? Some experts are beginning to question their impact, suggesting that a broader public health approach might be more beneficial. This involves focusing on known environmental risk factors rather than solely targeting individuals already exhibiting ARMS symptoms.
A Cautious View of Impact
Psychosis can affect a person's ability to distinguish what is real from what is not. Its impact may include changes in perception, beliefs, thinking, communication, and daily functioning. The consequences vary considerably between individuals, so broad claims about prevalence or outcomes should be made cautiously.
Limits of the Standard Approach
Common approaches generally emphasize recognizing symptoms, evaluating possible causes, and connecting people with appropriate mental-health care. Such methods can be important for responding to distress and reducing immediate risks. However, identifying people who may later develop psychosis remains uncertain, and prevention-oriented services must balance early support against the possibility of unnecessary labeling or intervention.
From Symptom to Clinical Concept
Psychosis is best understood as a description of a person's state or symptoms rather than a single mental illness. Over time, clinical thinking has increasingly treated it as a phenomenon that can arise in different contexts and for different reasons. This perspective supports individualized assessment rather than assuming that every experience follows the same pathway.
The Promise and Limitations of ARMS Clinics
ARMS clinics are specialized mental health services designed for young people, typically aged 14-35, who are considered at ultra-high risk of developing psychosis. These clinics aim to reduce the transition from the ARMS to a full-blown psychotic disorder, providing 'evidence-based recommendations' and 'guidance' for treatment. Many studies have reported the benefits of ARMS clinics, claiming they can prevent the development of psychosis.
- High False Positive Rates: Studies show that a significant percentage of individuals identified as being at risk for psychosis using scales like the CAARMS (Comprehensive Assessment of At-Risk Mental States) do not develop a psychotic disorder within 2-3 years. This leads to a high number of 'false positives,' questioning the accuracy of the screening methods.
- Defining the Construct: There is significant variability in the proportion of adolescents meeting ARMS criteria, ranging from 0.9% to 22.6%, depending on slight variations in the diagnostic criteria. This inconsistency highlights the difficulty in defining the ARMS construct itself.
- Lack of Specific Biomarkers: Attempts to identify specific biological markers for the ARMS phase and predictors of transition to clinical psychosis have so far been unsuccessful, making it difficult to objectively determine who will develop the condition.
What Current Reviews Emphasize
The National Institute of Mental Health describes psychosis resources as covering causes, signs and symptoms, treatment, and help-seeking. Across the cited clinical summaries, psychosis is characterized by a disconnection from reality that may involve hallucinations, delusions, or disorganized thought or speech. The sources also emphasize that psychosis can occur for many reasons and may be a symptom of a serious mental-health condition. These descriptions support careful assessment of both symptoms and underlying causes rather than treating psychosis as one uniform disorder.
Why One Explanation May Fail
WebMD presents psychosis as a condition requiring attention to causes, symptoms, and treatment options. That framing challenges overly simple accounts that treat psychosis as having one predictable origin or one universally appropriate response. It also suggests that treatment discussions should be connected to assessment rather than separated from the circumstances producing the symptoms. A limitation of a general overview is that it does not, by itself, resolve the difficult question of how accurately future psychosis can be predicted in people who are only considered at risk.
Comparing Prevention Pathways
A useful comparison is between approaches that respond to established symptoms and approaches that intervene earlier, before psychosis is clear. Earlier intervention may offer support sooner, but it also requires making judgments under uncertainty. Symptom-focused care may be more immediately actionable, while risk-focused care must address the possibility of false positives and avoidable stigma. The most appropriate balance is likely to depend on clinical context, patient preferences, and the quality of available follow-up.
A Public Health Approach to Prevention
Drawing parallels with preventive approaches for conditions like lung cancer and heart disease, experts suggest that a public health strategy targeting known risk factors for psychosis may be more effective. Instead of focusing solely on individuals in the ARMS phase, this approach would aim to reduce exposure to environmental factors that increase the risk of developing the disorder.
A More Careful Prevention Model
Rethinking psychosis prevention means distinguishing compassionate early support from confident prediction. Services can respond to distress and functional change without assuming that every person identified as at risk will develop psychosis. This approach keeps clinical attention on the individual's needs while acknowledging the limits of current certainty.
The Next Research Questions
Future work should clarify which early experiences meaningfully predict later psychosis and which instead resolve or reflect other forms of distress. Research should also examine the benefits and harms of labeling people as at risk. Progress will depend not only on better prediction, but also on interventions that are acceptable, proportionate, and useful to people who do not go on to develop psychosis.
Systems Shape Prevention
Prevention does not occur only inside specialist clinics. Access to assessment, continuity of care, social support, and protection from stigma can all influence what happens after someone reports concerning experiences. A system focused narrowly on prediction may overlook these practical conditions. Broader services therefore need to support people whether or not their symptoms fit a future-risk category.
People Beyond the Label
An at-risk designation can affect how people understand themselves and how others respond to them. Support should therefore communicate uncertainty clearly and avoid reducing a person's identity to a possible future diagnosis. Listening to individual goals and experiences can make early care more humane and more relevant. The central measure of success should include present well-being, not only whether psychosis is eventually avoided.