Medical schools are tasked with cultivating competent and compassionate physicians to serve patients and advance public health (
1). However, the educational pathway is exceptionally demanding, requiring substantial academic and emotional commitment from students (
2). This sustained pressure can adversely affect psychological well-being, potentially triggering or exacerbating mental health conditions such as depression and anxiety (
3). The risk of psychological disorders is significantly higher among medical students and professionals than in the general population (
4,
5).
A substantial body of literature has shown that medical students experience psychological distress at higher rates than the general population (
5). Meta-analytic evidence has reported a considerable prevalence of depressive symptoms among medical students worldwide (
6). Anxiety is also frequently reported in this population, although prevalence estimates vary across studies and settings, partly because of differences in instruments, cutoff points, and sociocultural context (
7,
8). In Iran, available studies have likewise documented notable levels of depression, anxiety, and stress among students of medical sciences. Nevertheless, evidence regarding the role of personality-related factors that may contribute to these outcomes among Iranian medical students remains limited (
9).
Among the personality traits implicated in student mental health, perfectionism has received considerable attention. Defined as a multidimensional construct characterized by exceedingly high personal standards and overly critical self-evaluation (
10,
11), perfectionism has a dual nature. Although striving for excellence can be adaptive, maladaptive forms are consistently associated with adverse psychological consequences, including increased depression, anxiety, and stress (
12). Studies have identified perfectionism as a strong predictor of psychological distress in medical students (
13). However, the existing literature presents a complex picture, and the precise nature of this relationship, particularly within the Iranian context, remains underexplored.