The disorder that shares many similar symptoms with schizophrenia is personality disorder.

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Schizotypal personality disorder shares many symptoms with schizophrenia, including odd or paranoid beliefs, unusual perceptual experiences, and social isolation. People with schizotypal personality disorder may also experience disorganized speech or behavior, similar to the positive symptoms of schizophrenia. However, they typically do not experience the negative symptoms, such as a flat affect or lack of motivation, to the same degree as someone with schizophrenia.

The Disorder That Shares Many Similar Symptoms with Schizophrenia Is