Which of the following is NOT a listed key feature of borderline personality disorder?

• A. Obsessive-compulsive rituals
• B. Splitting (all-or-nothing thinking)
• C. Suicidal behavior
• D. Rapid changes in mood

Answer: (A)

Borderline personality disorder is defined by emotional instability with rapid mood shifts, impulsive behaviors, and unstable, intense relationships. A hallmark feature is splitting or all-or-nothing thinking, where people swing between idealizing and devaluing others. Mood changes can occur quickly, even within the same day, and suicidal behavior or threats can be part of the pattern of dysregulation.

Obsessive-compulsive rituals belong to obsessive-compulsive disorder, where persistent obsessions drive repetitive compulsions aimed at reducing distress. These ritualistic behaviors are not a characteristic or defining feature of borderline personality disorder, though anxiety or other co-occurring conditions can appear alongside BPD. Hence, obsessive-compulsive rituals are not a typical feature of borderline personality disorder.