Borderline personality disorder — crisis assessment and stepped management (MEQ)

(i) Risk assessment priorities. Separate medical from psychiatric risk. Confirm medical clearance after overdose. Assess ideation, intent, plan, lethality of this attempt (20 tablets + cutting — low-moderate lethality but intent can change), access to further means (stockpiled meds, alcohol), prior attempts, hopelessness, protective factors (friend present, future-oriented statements), impulsivity, intoxication, and abandonment trigger. Distinguish acute wish to die from non-suicidal self-injury as affect regulation — she currently denies intent but the overdose still requires full assessment. Dynamic risk is elevated post-breakup and with alcohol. Capacity for discharge decisions; safeguarding if dependents; collateral if available. Document chronic baseline risk versus today's acute change.[5]

(ii) Working diagnosis and differentials. Working diagnosis: borderline personality disorder (DSM ≥5/9 features described longitudinally) with acute crisis after interpersonal rupture, alcohol misuse, and deliberate self-harm/overdose. Differentials/comorbidities: major depressive episode (screen systematically); bipolar spectrum (hours-long swings argue against mania/hypomania duration thresholds; still ask sleep need, elevated periods); substance-induced dysregulation; PTSD if trauma history; ADHD if lifelong neurodevelopmental pattern. Organic exclusion already partly addressed by medical clearance; revisit if atypical features emerge.[5]

(iii) Immediate crisis management. Validate distress; problem-solve the breakup crisis; collaborative safety plan; means restriction (secure medications, reduce alcohol access); least-restrictive disposition — consider discharge with same-day/next-day crisis team or community follow-up if acute risk is containable, versus brief crisis admission if intent escalates, supports fail, or intoxication/impulsivity remains high. Avoid both pejorative dismissal and open-ended admission without plan. Named clinician and written crisis contacts. Local Mental Health Act only if imminent risk and statutory criteria met — do not invent section numbers.[1][5]

(iv) Medium-term plan. Psychoeducation that BPD is treatable. Offer structured evidence-based psychotherapy. Example: DBT — individual therapy, skills group (mindfulness, distress tolerance, emotion regulation, interpersonal effectiveness), consultation team, phone coaching where available; hierarchy prioritises life-threatening behaviours. If DBT unavailable, structured clinical management / GPM is an evidence-supported alternative (McMain). Address alcohol with motivational work. Consistent team approach to reduce splitting.[1][2]

(v) Pharmacotherapy principles. No drug treats BPD as a whole (NICE/Cochrane stance). Do not start lamotrigine as default BPD stabiliser (LABILE negative). Treat comorbidity. Example scenario: if a comorbid major depressive episode is confirmed without bipolarity, sertraline may be continued/restarted carefully after overdose review (note she overdosed on sertraline — means restriction, limited dispensing, early review for activation/suicidality). Any symptom-targeted antipsychotic would need a written target and stop date. Avoid chronic benzodiazepines for emotion regulation.[3][4]