PSYCHOLOGICAL DETERMINANTS OF MEDICAL TREATMENT OUTCOMES
DOI:
https://doi.org/10.5281/zenodo.17982088Keywords:
Chronic Disease, Health Psychology, Physician-Patient Relations, Treatment AdherenceAbstract
Medical treatment outcomes have increasingly been understood as the result of complex interactions between biological processes and psychological variables. Beyond physiological mechanisms, emotional states, cognitive patterns, and interpersonal dynamics exert a significant influence on how patients experience illness and respond to therapeutic interventions. This literature review examines the role of psychological determinants in medical treatment outcomes, considering their impact across different clinical contexts. A comprehensive analysis of the scientific literature was conducted using internationally recognized databases, including PubMed/MEDLINE, Scopus, Web of Science, Embase, LILACS, SciELO, and the Cochrane Library. Publications from 2015 to 2025 were included, encompassing empirical studies, theoretical contributions, and clinical analyses addressing psychological factors within medical care. The selected literature was examined through thematic synthesis, allowing the identification of recurring patterns and conceptual models linking psychological variables to therapeutic effectiveness. The findings indicate that psychological stress, anxiety, depressive symptoms, illness-related beliefs, and the quality of the therapeutic relationship exert substantial influence on treatment adherence, symptom management, and clinical prognosis. These factors affect not only patient behavior but also physiological systems related to immune function, inflammatory processes, and neuroendocrine regulation. In addition, evidence suggests that negative illness perceptions and maladaptive coping strategies are consistently associated with poorer outcomes in both acute and chronic conditions. Overall, the literature supports the view that integrating psychological perspectives into medical treatment is essential for optimizing clinical outcomes. Interdisciplinary approaches that address emotional, cognitive, and relational dimensions alongside biomedical care tend to enhance therapeutic effectiveness, patient engagement, and quality of life. These findings underscore the importance of incorporating psychological knowledge into healthcare models, professional training, and clinical decision-making.
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Copyright (c) 2025 Luana Victória da Silva Nascimento, Larissa Musial Gaspar, Maria Julia Lopes
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