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Psychiatric disorders often coexist with internal medical conditions, posing significant challenges to diagnosis, treatment, and overall patient outcomes. This study examines the bidirectional relationship between these conditions, emphasizing their impact on morbidity, treatment adherence, and quality of life. Through a comprehensive review of the peer-reviewed literature, we explore the physiological, neuroinflammatory, and psychosocial mechanisms that underpin these interactions. Key psychiatric disorders, including depression, anxiety, cognitive impairments, and psychosis, are identified as critical contributors to diagnostic complexity and therapeutic hurdles. Our findings underscore the importance of integrated, multidisciplinary care models, advocating for early detection, routine mental health screening, and personalized treatment strategies. Challenges such as overlapping symptoms, diagnostic ambiguities, and potential drug interactions are critically analyzed, with practical, evidence-based recommendations proposed for clinical practice. Despite advancements, significant research gaps persist, particularly the lack of longitudinal studies and the limited application of precision medicine tailored to this population. Future directions focus on enhancing diagnostic tools, developing innovative therapeutic approaches, and integrating mental health services into routine care. This study highlights the critical need for holistic, patient-centered approaches to manage comorbid psychiatric and internal medical conditions, offering actionable insights to improve outcomes and bridge existing gaps in research and practice.
Țenea-Cojan et al. (Thu,) studied this question.