Resources for Patients and Caregivers

Hallucinations are where someone sees, hears, smells, tastes or feels things that don’t exist outside their mind. They’re common in people with schizophrenia, and are usually experienced as hearing voices. Hallucinations can be frightening, but there’s usually an identifiable cause.


Cluster Number:
Wiki Number: 22-Hallucinations
US Patients: 10-15% over a lifetime of even healthy individuals
World Patients:
Sex Ratio: 
Age Onset: 
Brain Area: 
Symptoms: perceptions of external stimuli which do not exist
Progression: can occur through any of the senses
Causes: occur frequently in schizophrenia, parkinson’s disease. More than five cups of coffee.
Medications: antipsychotics

Resources for Physicians, Counselors and Researchers


The world-wide medical research
reports chosen for each diagnosis 

Clicking each title opens the
PubMed article’s summary-abstract.

  • An Unusual Presentation of Vivid Hallucinations
    by Arielle Degueure on July 1, 2022

    Visual hallucinations may present secondary to neurologic, psychologic, or physiologic disturbances. Certain features and characteristics of visual hallucination are often attributed to various brain regions; however, with a broad list of causes and multifaceted pathophysiology, it is often hard to accurately localize. Overlapping clinical presentations may be due to the pathology of brain interconnections, rather than isolated brain regions themselves. In this study, we discuss a case of...

  • Combination Olanzapine and Samidorphan for the Management of Schizophrenia and Bipolar 1 Disorder in Adults: A Narrative Review
    by Hannah W Haddad on July 1, 2022

    Schizophrenia is a debilitating psychotic disorder characterized by positive symptoms such as delusions, hallucinations, and disorganized thoughts, and negative symptoms like lack of effect or motivation. Bipolar 1 disorder (B1D) is a psychiatric illness characterized by recurrent manic episodes in alternation with depressive episodes and interspersed periods of euthymia, ultimately resulting in psychological distress and impairment of daily functioning. Effective treatments are needed for both...

  • Distress factors of voice-hearing in young people and social relating: Exploring a cognitive-interpersonal voice-hearing model
    by Aikaterini Rammou on June 30, 2022

    CONCLUSIONS: Beliefs about voices being persecutory, dominant, intrusive and resisting voices seem to be significant contributors of distress in young people. In terms of proximity and power, relating to voices and social others appears to be contrasting.

  • Probable progressive supranuclear palsy in a patient with chronic schizophrenia: A case report
    by Akira Kita on June 28, 2022

    Rare neurodegenerative disorders may be considered in the differential diagnosis of Parkinsonism in patients with schizophrenia who show worsening signs of Parkinsonism under treatment with antipsychotics. To the best of our knowledge, the present study is the first report describing probable progressive supranuclear palsy (PSP) in a patient with chronic schizophrenia. A 64-year-old man presented with hallucinations, delusions and asociality. He had received treatment with both typical and...