Which of these symptoms is NOT part of schizophrenia diagnosis?

Visual impairment is not considered a symptom included in the diagnosis of schizophrenia. Schizophrenia is characterized by a range of symptoms that predominantly include delusions, hallucinations, and disorganized speech, among others. Delusions refer to strongly held false beliefs that do not reflect reality, while hallucinations involve perceptual experiences that occur without any external stimulus, often manifesting as auditory or visual experiences. Disorganized speech reflects a disruption in thoughts and can greatly affect communication, often making it difficult to engage in conversation coherently.

In contrast, visual impairment does not align with the diagnostic criteria of schizophrenia as it does not pertain to the cognitive or perceptual distortions typical of the disorder. Thus, while symptoms directly related to thought and perception are crucial for diagnosing schizophrenia, visual impairment is not recognized as one of those symptoms.