What it is
Fixed false beliefs not responsive to evidence or reasoned argument — a significant psychiatric symptom requiring prompt professional assessment and, usually, medical intervention.
Research-supported
Delusions
Fixed false beliefs not responsive to evidence or reasoned argument — a significant psychiatric symptom requiring prompt professional assessment and, usually, medical intervention.
CategoryNeurological
Reviewed by Gyfts Editorial Team · Editorial Health Review
26 March 2026
At a glance
Delusions at a glance
Commonly experienced as
- Experiencing delusions is frightening — both for the person and for those around them. The person experiencing persecutory delusions lives in a genuinely threatening subjective reality. Family members watching someone they love develop delusional thinking often feel helpless and frightened. The critical issue is that this is a medical symptom — not a choice or a reflection of the person.
Evidence context
Research-supportedSee the evidence snapshotContext
Patterns of Delusions
Delusions are fixed beliefs that are not amenable to evidence-based challenge and that are inconsistent with the person's cultural and social background. They are a positive psychotic symptom occurring in schizophrenia, schizoaffective disorder, severe depression with psychotic features, bipolar disorder with psychosis, drug-induced psychosis, delirium, and some dementia presentations. Common types include persecutory delusions (being watched, followed, or harmed), grandiose delusions (having special powers or status), and referential delusions (believing communications are directed personally). Delusions represent a serious impairment in reality testing requiring psychiatric assessment and, typically, antipsychotic medication. They are not the same as culturally valued spiritual or religious beliefs.
Could this be you
People commonly experience
Delusions shows up differently for everyone. Browse by how it tends to be felt — these are common experiences, not a checklist or a diagnosis.
In daily life1 common experience
- Experiencing delusions is frightening — both for the person and for those around them. The person experiencing persecutory delusions lives in a genuinely threatening subjective reality. Family members watching someone they love develop delusional thinking often feel helpless and frightened. The critical issue is that this is a medical symptom — not a choice or a reflection of the person.
Common experiences people describe — not a diagnostic checklist.
The Evidence
Evidence context: delusions
Delusions are a serious psychiatric symptom requiring prompt professional assessment. Understanding the evidence helps clarify what support is appropriate.
Overall pictureStrong clinical evidence
Delusions require psychiatric assessment — not self-management
Delusions are a well-documented psychotic symptom with established medical pathways. Complementary approaches have no direct evidence-based role in addressing them and are not a substitute for professional psychiatric assessment and care.
Seek urgent help immediatelySome presentations alongside delusions signal a medical emergency requiring immediate care.
Seek emergency services if there is sudden onset weakness, numbness, or speech difficulty; seizures or loss of consciousness; the worst headache ever experienced; or vision changes with other neurological symptoms. These may indicate stroke, brain injury, or another acute medical condition. Do not delay seeking help.
Professional assessment is essentialDelusions are not a symptom to monitor at home or manage without qualified support.
Anyone experiencing delusions — or whose loved one is — should contact a GP, psychiatrist, or mental health crisis service promptly. Delusions occur across several serious conditions including psychosis, severe mood disorders, delirium, and some dementias. Identifying the underlying cause requires professional assessment and shapes the appropriate care pathway.
What the evidence showsMedical and psychiatric treatment has a strong evidence base for managing delusions.
Antipsychotic medication is the primary evidence-based intervention for delusions across most conditions. Psychological therapies such as cognitive behavioural therapy for psychosis (CBTp) have supporting evidence as adjuncts to medication. Complementary approaches have no established evidence for directly addressing delusional thinking and should not be positioned as alternatives to medical care.
Supportive care alongside treatmentGeneral wellbeing support may have a role alongside — not instead of — psychiatric care.
Family education, crisis support services, and community psychiatric nursing are recognised supports alongside medical treatment. Some individuals find structured routine, social connection, and stress reduction helpful for general wellbeing during recovery. Any complementary approach should be discussed with the treating psychiatric team to ensure it does not interfere with the care plan.
What complementary approaches cannot doNo complementary or holistic approach has evidence for directly addressing delusions.
Complementary and alternative approaches are not appropriate as standalone responses to delusions. Pursuing them in place of psychiatric care carries real risk of harm through delayed treatment. If someone is using complementary approaches for general wellbeing support, this should be disclosed to their psychiatric team and should never replace prescribed medical management.
Understanding delusions clinicallyDelusions are a recognised psychiatric symptom, not a spiritual or lifestyle matter.
Delusions are fixed false beliefs inconsistent with a person's cultural background and not responsive to evidence or reasoned argument. They are distinct from culturally or spiritually held beliefs. They occur in schizophrenia, schizoaffective disorder, bipolar disorder with psychosis, severe depression with psychotic features, drug-induced psychosis, delirium, and some dementias — each requiring different clinical management.
References
Evidence & Research
Educational sources that inform this overview. Inclusion is for context and does not imply endorsement.
- International classification of functioning, disability and health (ICF)
- The pre-therapeutic classification of co-morbidity in chronic disease
- The need for a new medical model: A challenge for biomedicine
Full citations are maintained by the Gyfts editorial team and reviewed periodically.
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