What it is
Perceptions experienced as real without an external stimulus — seeing, hearing, or sensing things that others cannot perceive.
Research-supported
Hallucinations
Perceptions experienced as real without an external stimulus — seeing, hearing, or sensing things that others cannot perceive.
CategoryNeurological
Reviewed by Gyfts Editorial Team · Editorial Health Review
26 March 2026
At a glance
Hallucinations at a glance
Commonly experienced as
- People describe hearing voices commenting on their actions, calling their name, or having conversations; seeing figures or shapes that are not present; or feeling sensations on the skin without a source. The experience is typically fully convincing and may be frightening, confusing, or occasionally neutral.
Evidence context
Research-supportedSee the evidence snapshotContext
Patterns of Hallucinations
Hallucinations are perceptual experiences that occur in the absence of an external stimulus — appearing as real as genuine perception to the person experiencing them. They can affect any sensory modality: auditory hallucinations (hearing voices or sounds) are most common in psychotic conditions; visual hallucinations occur in delirium, Lewy body dementia, and psychedelic states; tactile, olfactory, and gustatory hallucinations occur across various neurological and psychiatric conditions. They arise in psychosis (schizophrenia, schizoaffective disorder, bipolar with psychotic features), severe depression with psychotic features, delirium (acute confusion from medical illness), dementia, Parkinson's disease, substance use, and extreme sleep deprivation. Non-clinical hallucinations include hypnagogic and hypnopompic experiences at sleep-wake transitions (common and benign). Any new hallucinations require medical and psychiatric assessment.
Could this be you
People commonly experience
Hallucinations shows up differently for everyone. Browse by how it tends to be felt — these are common experiences, not a checklist or a diagnosis.
In the body1 common experience
- People describe hearing voices commenting on their actions, calling their name, or having conversations; seeing figures or shapes that are not present; or feeling sensations on the skin without a source. The experience is typically fully convincing and may be frightening, confusing, or occasionally neutral.
Common experiences people describe — not a diagnostic checklist.
The Evidence
Evidence context: Hallucinations
What research and clinical practice tell us about hallucinations — their causes, assessment, and the approaches with the strongest support.
Overall pictureStrong evidence base
Hallucinations are well-studied and require professional assessment
Hallucinations have multiple causes — from psychosis and delirium to benign sleep-wake transitions — and are among the most researched symptoms in psychiatry and neurology. Effective, evidence-backed approaches exist, but professional evaluation is always the essential first step.
When to seek urgent careSome hallucinations signal a medical emergency requiring immediate attention.
Seek emergency care immediately if hallucinations occur alongside sudden weakness, numbness, or speech difficulty (possible stroke signs), seizures, loss of consciousness, or the worst headache ever experienced. Vision changes with other neurological symptoms also require urgent evaluation. Do not wait to see if these resolve on their own.
What the evidence showsAntipsychotic medication and CBT for psychosis have the strongest research support.
Antipsychotic medications have strong evidence for reducing hallucinations in psychotic conditions. Cognitive behavioural therapy adapted for psychosis has moderate-to-strong evidence for reducing distress caused by persistent voices. Early intervention services are associated with significantly better long-term outcomes. Evidence for complementary approaches as standalone options is limited.
Understanding the causesHallucinations arise across a wide range of neurological and psychiatric conditions.
Common causes include schizophrenia, bipolar disorder with psychotic features, severe depression, delirium from medical illness, Lewy body dementia, Parkinson's disease, and substance use. Hypnagogic and hypnopompic hallucinations at sleep-wake transitions are common and generally benign. Any new or unexplained hallucinations warrant professional medical and psychiatric assessment.
Getting the right supportA qualified professional should assess any hallucinations that are new, distressing, or unexplained.
A GP, psychiatrist, or neurologist can identify the underlying cause and recommend appropriate care. Early assessment matters — outcomes are meaningfully better when support is accessed promptly. If hallucinations are distressing or affecting daily life, specialist mental health services, including early intervention teams, are the appropriate starting point.
Approaches used alongside professional careSome complementary and holistic approaches may support wellbeing when used alongside professional treatment.
Mindfulness-based practices, peer support, and structured psychosocial programmes are sometimes used alongside clinical care to support overall wellbeing and reduce distress. These are not substitutes for professional assessment or evidence-based treatment. Any complementary approach should be discussed with the treating clinician to ensure it is safe and appropriate.
What this platform cannot doGyfts provides educational context — it does not assess, evaluate, or replace qualified care.
Hallucinations require professional evaluation to identify their cause and guide appropriate care. This content is educational only. Gyfts does not assess symptoms, recommend specific treatments, or substitute for clinical or psychiatric assessment. If you or someone you know is experiencing hallucinations, please contact a qualified health professional.
References
Evidence & Research
Educational sources that inform this overview. Inclusion is for context and does not imply endorsement.
- Central sensitization: Implications for the diagnosis and treatment of pain
- Principles of neural science (5th ed.)
- Harrison's neurology in clinical medicine (3rd ed.)
Full citations are maintained by the Gyfts editorial team and reviewed periodically.
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