A client with borderline personality disorder (BPD) alternates between telling one nurse 'You're the only one who understands me' and telling another 'She doesn't care about me at all.' This behavior pattern is called:

SPLITTING is a primitive defense mechanism characteristic of BORDERLINE PERSONALITY DISORDER (BPD) in which the person cannot integrate the good and bad qualities of people (or themselves) and instead perceives them as either entirely good or entirely bad. In a clinical setting, splitting often manifests as: one nurse is 'perfect' while another is 'terrible'; complaints that other staff are cruel while the target nurse is wonderful; rapidly shifting perceptions of the same person from idealized to devalued ('I love you/I hate you'). The intensity can shift rapidly, sometimes within the same day. NURSING APPROACH to splitting: AVOID SPLITTING BACK — the nurse must not compete with staff or align exclusively with the client's idealized version; TEAM CONSISTENCY — the multidisciplinary team must maintain consistent, unified responses; TEAM COMMUNICATION — all staff must be aware of the dynamic and communicate regularly; CONSISTENT BOUNDARIES — consistent, clear limits that are enforced by all staff, not selectively; MATTER-OF-FACT, non-emotionally reactive responses; DIALECTICAL BEHAVIOR THERAPY (DBT): the gold-standard treatment for BPD, developed by Marsha Linehan; combines cognitive-behavioral techniques with mindfulness and acceptance strategies; targets emotional dysregulation, impulsivity, self-destructive behaviors. BPD CORE FEATURES (DSM-5 — five or more required): intense unstable relationships; unstable self-image; impulsivity; self-harm or suicidal behaviors; emotional instability; chronic emptiness; intense anger; transient paranoid ideation or dissociation; frantic efforts to avoid abandonment. NURSING AWARENESS: splitting is a symptom of the disorder, not a moral failing; maintaining a non-punitive, therapeutic stance is essential.