Mania
Mania is a mood state characterised by an elevated, expansive, or irritable mood that is persistent and out of proportion to the circumstances. It is the defining feature of bipolar affective disorder and is a critical differential diagnosis when assessing a patient with psychotic symptoms, as manic episodes can present with delusions and hallucinations that mimic schizophrenia.
Why Does This Happen? (First Principles)
💡 FIRST PRINCIPLE: Mania represents a pathological elevation of mood-driven behaviour, likely arising from dysregulation of monoaminergic neurotransmitter systems (dopamine, noradrenaline, serotonin) in circuits involving the prefrontal cortex, amygdala, and striatum. Where schizophrenia involves a “splitting” of psychic functions with deterioration, mania involves an acceleration and disinhibition of mood, thought, and behaviour.
Aetiology & Risk Factors
📝 TODO: Needs source — genetic basis, bipolar disorder heritability, environmental triggers (sleep deprivation, stress, drugs).
Clinical Features
Clinical features that are relevant to differentiating mania from schizophrenia include:
- Elevated, expansive, or irritable mood — the core feature.
- Grandiosity — inflated self-esteem, beliefs of special talents or relationships.
- Pressured speech — rapid, uninterruptible speech that may become incoherent if severe.
- Decreased need for sleep — the patient feels rested after minimal sleep.
- Increased goal-directed activity — excessive planning, social activity, or work.
- Distractibility — attention jumps between ideas and stimuli.
- Psychotic features — delusions (usually grandiose or persecutory) and hallucinations (usually mood-congruent) can occur in severe mania.
⚠️ EXAM DETAIL: When mania presents with psychotic features, the delusions are typically mood-congruent (e.g., grandiose delusions during elated mood), unlike schizophrenia where delusions are often bizarre and mood-incongruent.
Investigations
📝 TODO: Needs source — specific investigations for mania (mood diaries, thyroid function, drug screen).
Management
📝 TODO: Needs source — mood stabilisers (lithium, valproate), antipsychotics for acute mania, ECT for severe/refractory cases.
Complications
📝 TODO: Needs source — risk during manic episodes (financial ruin, legal issues, harm to self/others), long-term course.
Differential Diagnosis
| Condition | Distinguishing Features |
|---|---|
| schizophrenia | Chronic course, negative symptoms, bizarre/mood-incongruent delusions, thought alienation phenomena. Mood is not persistently elevated. |
| schizoaffective-disorder | Both schizophrenic and mood symptoms present simultaneously at equal intensity. |
| acute-and-transient-psychotic-disorder | Acute onset, polymorphic symptoms, complete recovery within months, no persistent mood elevation. |
| Substance-induced mania | Temporal relationship with drug use (stimulants, corticosteroids); resolves with abstinence. |
Exam Focus
Viva Questions
- How do you differentiate mania with psychotic features from schizophrenia? (Mood congruence of delusions, presence of grandiosity, pressured speech, decreased need for sleep, episodic course.)
- What are Schneider’s First Rank Symptoms and are they present in mania? (They can occur but are more characteristic of schizophrenia.)
OSCE Scenarios
- A patient presenting with elevated mood, grandiosity, and persecutory delusions — take a history and formulate a differential diagnosis.
MCQ Traps
- ⚠️ EXAM DETAIL: Manic delusions are typically mood-congruent (grandiose during elation, persecutory during irritable mania) — this is a key differentiating feature from schizophrenia.
- ⚠️ EXAM DETAIL: Decreased need for sleep (not insomnia) is characteristic of mania — the patient feels rested after minimal sleep.
Source Notes
- Information in this page is drawn from differential diagnosis discussions in the existing schizophrenia and related disorders pages, which are sourced from the Handbook of Clinical Psychiatry (de Silva & Hanwella) and Dr. Ajith Jayasekara’s lectures.