INTRODUCTION Illness denial pertains to medical patients who do not acknowledge the presence or severity of their disease or the need of treatment. OBJECTIVE This systematic review was performed to clarify the clinical role and manifestations of illness denial, its impact on health attitudes and behavior, as well as on short- and long-term outcomes in patients with medical disorders. METHODS The systematic search according to the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) guidelines was conducted on PubMed, Scopus, and Web of Science. RESULTS The initial search yielded a total of 14,098 articles; 176 studies met the criteria for inclusion. Illness denial appeared to be a relatively common condition affecting a wide spectrum of health attitudes and behavior. In some cases, it may help a person cope with various stages of illness and treatment. In other situations, it may determine delay in seeking treatment, impaired adherence, and reduced self-management, leading to adverse outcomes. The Diagnostic Criteria for Psychosomatic Research (DCPR) were found to set a useful severity threshold for the condition. An important clinical distinction can also be made based on the DCPR for illness denial, which require the assessment of whether the patient has been provided with an adequate appraisal of the medical situation. CONCLUSIONS This systematic review indicates that patients with medical disorders experience and express illness denial in many forms and with varying degrees of severity. The findings suggest the need for a multidimensional assessment and provide challenging insights into the management of medical disorders.

中文翻译：

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医疗疾病中的疾病否认：系统评价。

简介 否认疾病涉及不承认其疾病的存在、严重程度或治疗需要的医疗患者。目的 本系统评价旨在阐明否认疾病的临床作用和表现、其对健康态度和行为的影响，以及对内科疾病患者的短期和长期结果的影响。方法 根据系统评价和荟萃分析的首选报告项目 (PRISMA) 指南，在 PubMed、Scopus 和 Web of Science 上进行系统检索。结果 初步检索共获得 14,098 篇文章；176 项研究符合纳入标准。否认疾病似乎是一种相对常见的情况，影响广泛的健康态度和行为。在某些情况下，它可以帮助一个人应对疾病和治疗的各个阶段。在其他情况下，它可能会导致寻求治疗的延迟、依从性受损以及自我管理能力下降，从而导致不良后果。心身研究诊断标准（DCPR）被发现可以为该病症设定一个有用的严重程度阈值。还可以根据否认疾病的 DCPR 进行重要的临床区分，这需要评估患者是否对医疗状况进行了充分的评估。结论 这项系统评价表明，患有医学疾病的患者以多种形式经历并表达了对疾病的否认，其严重程度各不相同。研究结果表明需要进行多维评估，并为医疗疾病的管理提供具有挑战性的见解。