Borderline Personality Disorder (BPD) is a mental health condition defined by unstable relationships, emotional dysregulation, and impulsive behaviors. Individuals with BPD often experience intense emotional episodes, leading to self-destructive actions and difficulties in maintaining healthy relationships. Symptoms can include dissociative episodes, such as feelings of depersonalization or derealization. Emotional instability is a core feature, resulting in rapid mood swings and heightened sensitivity to emotional stimuli. Diagnosis typically involves a comprehensive evaluation by a mental health professional using criteria from the DSM-5. Common assessment tools include the Mood Disorder Questionnaire and clinical interviews. Treatment often combines psychotherapy, such as Dialectical Behavior Therapy (DBT), with medication for co-occurring conditions. Understanding BPD is crucial for effective management and improving quality of life. Early intervention can help mitigate severe symptoms and enhance coping strategies. Overall, BPD significantly impacts interpersonal relationships and emotional well-being.