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Historically, BPD has been diagnosed more frequently in women. However, recent studies suggest that the prevalence of BPD is nearly equal across genders, highlighting a potential diagnostic bias that disproportionately affects men. This paper explores gender disparities in BPD diagnosis and treatment, emphasizing the male experience. Diagnostic biases may result from differences in symptom expression, particularly explosive temperament and novelty-seeking behavior, which are often misattributed to masculinity. Furthermore, current treatment is less effective for men, as research and therapeutic approaches have primarily focused on women. These disparities contribute to increased distress and undertreatment in men with BPD. Addressing gender biases in diagnosis and treatment is critical for improving mental health outcomes for male BPD patients.