Educational draft · awaiting clinical reviewUse Rapid for revision, not patient-care decisions. Check current national and local guidance and the BNF or BNFC before acting.
2 min synopsisUK scopeSources checked 27 Aug 2026Clinical review pending
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Mixed activation with immediate suicide danger
Despair, agitation, racing thoughts, reduced sleep, impulsivity and access to lethal means can combine depressive intent with manic capability, requiring urgent action even when the person is neither classically euphoric nor slowed.
Action: Assess the current suicide scenario, preparation, means, psychosis, intoxication, dependants and physical exhaustion; reduce relevant access and arrange same-day specialist care. Treat the active manic or mixed syndrome in the least restrictive safe setting while monitoring depression closely.
Synopsis
Distinguish rapid cycling and mixed affective states from ordinary mood variability, reconstruct episode polarity and timing, address suicide and medical contributors, and apply the current NICE treatment sequence without unsupported special algorithms.
Rapid cycling conventionally means four or more distinct mood episodes within twelve months; it does not mean ordinary hour-to-hour emotional change.
Reconstruct each episode's polarity, duration, severity, recovery and treatment rather than accepting the word cycling as a diagnosis.
A mixed affective state contains manic and depressive symptoms together, such as agitation, racing thoughts and reduced sleep alongside hopelessness or suicidal thinking.
Key red flags
Suicidal intent with agitation, impulsivity, reduced sleep or rapidly changing resolve creates high capability and requires immediate scenario-based intervention.
Investigation priorities
01
Month-by-month lifetime timelineFirst step
Map polarity, duration, remission, impairment, treatment, hospital care and major contextual changes.
Management branches
Current mixed episodeTreat mania and watch depression
Manic activation and depressive symptoms are present together with clinically significant impairment or risk.
Assess suicide, psychosis, violence, self-neglect, substances and physical exhaustion and escalate urgently when immediate harm or severe illness is present.
Follow the NICE acute mania sequence, including antidepressant review and an individually selected antipsychotic when indicated.
National guidance is shown before implementation-dependent detail. Typical adult dose examples remain subject to patient factors, contraindications and the live BNF or specialist protocol. Source check completed 27 Aug 2026; clinical approval remains outstanding.