Crisis Intervention (Mental Health) links psychiatric assessment, therapeutic communication, crisis stabilization, and psychopharmacology safety to NCLEX-RN clinical judgment: recognize suicide and violence risk, decompensating psychosis, withdrawal emergencies, eating-disorder medical instability, and delirium versus dementia, then escalate per policy and orders. Canadian items may use metric units and provincial wording; prioritization logic matches NCLEX-RN. Pathway context (RN, Canada). This lesson supports NCLEX-RN preparation with Canada-friendly practice framing (SI measures where shown, interprofessional norms). Continue with related lessons from the pathway lesson hub. Learning objectives - Integrate mental status, mood, thought content, risk assessment, and medication side effects to identify priority threats across psychiatric presentations. - Select nursing interventions and teaching aligned with orders, scope, and unit protocol for crisis, mood, anxiety, trauma, psychotic, substance, personality, eating, and cognitive disorders when shown. - Communicate early when findings suggest active suicidal plan, command hallucinations, alcohol/benzodiazepine withdrawal, NMS/serotonin syndrome, lithium toxicity, refeeding risk, or acute delirium.