For decades, the cultural narrative surrounding psychotherapy has been almost exclusively one of healing, growth, and self-discovery. However, a growing body of research is beginning to illuminate a more complex and sometimes troubling reality: for a significant number of individuals, therapy can result in worsening symptoms, emotional distress, and even lasting harm.
Recent investigations highlighted by Mad in America—including a comprehensive narrative review, a study on the "nocebo effect," and a series of surveys among clinical professionals—reveal a systemic failure to define, monitor, and acknowledge the adverse effects of psychological interventions. From the "nocebo" impact of negative expectations to a widespread clinical tendency to dismiss patient-reported harm as "unavoidable" or "unrelated to treatment," the field of mental health is facing a reckoning regarding its "first, do no harm" mandate.
Main Facts: The Hidden Statistics of Therapeutic Harm
The most striking revelation from recent literature is the sheer scale of negative experiences. A narrative review led by Dushad Ram of Shaqra University, published in the Industrial Psychiatry Journal, suggests that when "adverse events" are defined broadly to include unmet expectations and general dissatisfaction, an astounding 95.6% of patients report negative experiences at some point during their treatment.
Even when narrowing the focus to specific clinical categories, the numbers remain significant:
- Predictable Side Effects: Between 33% and 41% of patients experience temporary but distressing side effects, such as increased anxiety during exposure therapy or emotional exhaustion following a session.
- Adverse Effects: Approximately 5% to 10% of service users report more severe outcomes, including the deterioration of their original symptoms, the emergence of new psychological issues, or strained family relationships.
- Malpractice: Roughly 2.6% of patients report severe unethical conduct, ranging from misdiagnosis to boundary violations and sexual harassment.
Despite these figures, the research indicates a profound "blind spot" within the profession. Studies conducted by Sanne T. L. Houben at Maastricht University find that clinicians frequently disagree on what constitutes a "negative effect" and often categorize patient deterioration as an inherent, unavoidable part of the process rather than a failure of the intervention.
Chronology: From Efficacy Obsession to the Recognition of Harm
The evolution of psychotherapy research has historically prioritized efficacy—proving that therapy works—over safety. This "efficacy-first" model has led to a chronological lag in the development of standardized tools for measuring harm.
The Era of "Universal Benefit"
Throughout the mid-20th century, psychotherapy was often viewed as a "benign" intervention. Unlike pharmaceutical trials, which are required by law to track and report side effects, psychological treatments were rarely subjected to the same level of rigorous scrutiny regarding adverse outcomes.
The Rise of Standardized Definitions (2010s–Present)
In the last decade, researchers have begun to categorize negative outcomes more systematically. The work of Dushad Ram and colleagues represents a modern effort to differentiate between "predictable side effects" (expected discomfort) and "adverse effects" (unexpected harm). This shift marks a move toward a more "medicalized" safety standard in psychology, acknowledging that any intervention powerful enough to heal is also powerful enough to harm.
The Discovery of the Psychotherapeutic Nocebo
Parallel to this, the concept of the "nocebo effect"—the "evil twin" of the placebo effect—has gained traction. As explored by Andrea W. M. Evers in Current Opinion in Psychology, researchers are now beginning to understand how the context of therapy (long waiting lists, therapist communication style, and social stigma) can trigger biological and psychological worsening before a single session even begins.
Supporting Data: Mechanisms of Therapeutic Deterioration
The research identifies three primary pillars that contribute to negative outcomes: therapist factors, patient vulnerabilities, and the "nocebo" mechanism.
1. The Therapist’s Role in Harm
According to the Ram review, the primary drivers of preventable harm include:
- Lack of Empathy and Inflexibility: Therapists who adhere strictly to a manualized protocol while ignoring the patient’s immediate distress.
- Informed Consent Failures: A failure to warn patients that they might feel worse before they feel better.
- Cultural Insensitivity: Using Westernized models of psychology on ethnic minorities, which can lead to a sense of being misunderstood or "othered."
2. The Nocebo Effect: The Power of Expectation
Andrea Evers’ research highlights that human psychology possesses an "evolutionary bias" that prioritizes negative experiences. If a patient has had a previous bad experience with a psychiatrist, or if they have heard horror stories on social media, their brain is primed for a "nocebo response."
- Social Learning: Hearing about negative therapy outcomes from peers can lead to reduced adherence and increased symptom reporting.
- Communication Gaps: When therapists overemphasize the difficulty of the "work" without providing a clear rationale, it can inadvertently spike patient anxiety.
3. Vulnerable Populations
The data consistently shows that three groups are at higher risk:
- Young People: More likely to experience a "rupture" in the therapeutic alliance.
- Trauma Survivors: Highly susceptible to "retraumatization" if the therapist rushes into deep trauma work without establishing safety.
- Minorities: Frequently harmed by therapists who lack cultural competence.
Official Perspectives: The Clinician’s Dismissal
Perhaps the most controversial aspect of this new research is the disconnect between how patients and clinicians perceive harm. The Dutch studies led by Sanne T. L. Houben provide a rare window into the minds of practitioners.
The survey of Dutch clinical psychologists revealed a startling lack of consensus. When presented with patient-reported issues, clinicians were often split 50/50 on whether the issue was even related to the therapy. For instance, nearly half of the clinicians surveyed dismissed a patient’s "feeling worse" as unrelated to the treatment they were providing.
The "Unavoidability" Myth
A significant portion of clinicians reported believing that certain negative effects are simply "part of the package." These include:
- Increased Stress: Viewed by many as a necessary catalyst for change.
- Dependence: Often dismissed as a temporary phase rather than a potential failure to foster patient autonomy.
- Relationship Strain: Frequently framed as the patient "setting boundaries" rather than an adverse side effect of the therapy’s influence on the patient’s social ecosystem.
Furthermore, the study found that only 70% of clinicians who were "familiar" with negative effects actually discussed them with their clients. Among those with low familiarity, that number dropped to 32.1%. This suggests that a vast majority of patients are entering therapy without full informed consent regarding the risks.
Implications: Moving Toward a Safer Therapeutic Model
The findings of these three studies have profound implications for the future of mental health care. The current state of affairs—where harm is frequent but rarely discussed or acknowledged by providers—is ethically tenuous.
The Need for Standardized Monitoring
The authors of the narrative review argue for the implementation of standardized monitoring tools. Just as a doctor monitors blood pressure when prescribing a new medication, therapists should use validated scales, such as the "Positive and Negative Experiences in Psychotherapy" survey, to track adverse events in real-time.
Reforming Informed Consent
The research suggests that the "nocebo effect" can actually be mitigated through better informed consent, not less. By providing a balanced framing of both the potential benefits and the potential discomforts, therapists can reduce the "shock" of negative emotions, thereby preventing them from spiraling into full-blown adverse effects.
Addressing the "Culture of Silence"
The Dutch study highlights a need for a cultural shift within the profession. If clinicians continue to dismiss patient-reported harm as "unavoidable" or "unrelated," the field risks losing public trust. There is an urgent need for therapist training to include "rupture resolution" and "harm recognition" as core competencies.
Conclusion
Psychotherapy remains a vital tool for many, but the data is clear: it is not a risk-free intervention. As the field moves forward, the "shadow side" of the couch must be brought into the light. Acknowledging that 95% of patients may experience some form of dissatisfaction or distress is not an indictment of therapy itself, but rather a call for a more honest, transparent, and patient-centered approach to mental health.
By integrating rigorous side-effect monitoring and fostering a clinical culture that listens when patients say they are being harmed, the profession can finally live up to its promise of being a truly safe space for healing.
References:
- Evers, A. W. M. (2026). The nocebo effect in psychotherapy. Current Opinion in Psychology.
- Houben, S. T. L., et al. (2026). Exploring the overlooked: Dutch clinicians’ perspectives on side effects of psychological interventions. Clinical Psychology & Psychotherapy.
- Ram, D., et al. (2026). Negative events in Psychotherapy: A narrative review. Industrial Psychiatry Journal.
