it is estimated that approximately 70% to 75% of individuals diagnosed with schizophrenia experience auditory hallucinations, which means they hear voices that others cannot hear. These hallucinations are a hallmark symptom of schizophrenia. However, it's essential to note that not all individuals with schizophrenia have visual hallucinations (seeing things that aren't there). Visual hallucinations are less common, occurring in about 15% to 30% of cases.
It's important to recognize that schizophrenia is a complex mental disorder with a wide range of symptoms and variations in how it manifests in different individuals. Some people may experience predominantly auditory hallucinations, while others may have visual hallucinations, or a combination of both, along with other symptoms such as delusions, disorganized thinking, and changes in emotional expression.
Keep in mind that research and understanding of mental health disorders like schizophrenia are continually evolving, so the latest statistics might differ slightly from what I've provided. For the most current and accurate information, it's best to refer to updated medical literature, professional organizations, or mental health institutions.