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Perception of Illness Influences Outcome

Perception of Illness Influences OutcomeIt is not just in marketing and politics that perception is deemed more important than reality. Our perception of an illness when sick may well play a major role in how we recover.

Several factors influence the overall course of an illness, including additional medical conditions, stress levels, and social support. But a new study suggests that what you think about your illness matters just as much, if not more, in determining your health outcomes.

Psychologists Drs. Keith Petrie of the University of Auckland and John Weinman, of the Institute of Psychiatry at King’s College, reviewed the existing literature on patients’ perceptions of illness.

Their study, published in the February issue of Current Directions in Psychological Science, documents that a person’s illness perception is directly related to several important health outcomes.

The researchers determined perception of illness influences an individual’s level of functioning and ability, utilization of health care, adherence to treatment plans laid out by health care professionals, and even overall mortality.

In fact, some research suggests that how a person views his illness may play a bigger role in determining his health outcomes than the actual severity of his disease.

Experts believe our illness perceptions emerge out of our beliefs about illness and what illness means in the context of our lives.

Accordingly, we might have beliefs about how an illness is caused, how long it will last, how it will impact us or our family members, and how we can control or cure it. The bottom line, says Petrie, is that “patients’ perceptions of their illness guide their decisions about health.”

Indeed, the perception of treatment efficacy can influence compliance to a treatment regime. If, for example, we feel like a prescribed treatment isn’t making us feel better we might stop that treatment.

Research on illness perceptions show that treatment outcomes depend on more than having a competent physician.

According to Petrie, “a doctor can make accurate diagnoses and have excellent treatments but if the therapy doesn’t fit with the patient’s view of their illness, they are unlikely to keep taking it.” A treatment that does not consider the patient’s view is likely to fail, he argues.

The authors conclude that understanding illness perceptions and incorporating them into health care is critical to improving treatment outcomes.

Asking patients about how they view their illness gives physicians the opportunity to identify and correct any inaccurate beliefs patients may have. Once a patient’s illness perceptions are clearly laid out, a physician can try to nudge those beliefs in a direction that is more compatible with treatment or better health outcomes.

Such conversations can help practitioners identify patients that are at particular risk of coping poorly with the demands of their illness.

Given mounting pressures to reduce costs and improve care the incorporation of brief, straightforward psychoeducational interventions may help to modify negative illness beliefs and lead to improvements over a range of different health outcomes.

However, experts say this research is emerging and scientists don’t know much about how our illness perceptions develop in the first place.

Nevertheless, continued research on illness perceptions will help practitioners design effective interventions that are able to reach a large number of patients.

Source: Association for Psychological Science

Doctor talking to patient by shutterstock.

Perception of Illness Influences Outcome

Rick Nauert PhD

Rick Nauert, PhDDr. Rick Nauert has over 25 years experience in clinical, administrative and academic healthcare. He is currently an associate professor for Rocky Mountain University of Health Professionals doctoral program in health promotion and wellness. Dr. Nauert began his career as a clinical physical therapist and served as a regional manager for a publicly traded multidisciplinary rehabilitation agency for 12 years. He has masters degrees in health-fitness management and healthcare administration and a doctoral degree from The University of Texas at Austin focused on health care informatics, health administration, health education and health policy. His research efforts included the area of telehealth with a specialty in disease management.

APA Reference
Nauert PhD, R. (2018). Perception of Illness Influences Outcome. Psych Central. Retrieved on November 24, 2020, from
Scientifically Reviewed
Last updated: 8 Aug 2018 (Originally: 30 Jan 2012)
Last reviewed: By a member of our scientific advisory board on 8 Aug 2018
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