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What is the Schizophrenia Spectrum?

Tricia Christensen
Updated Mar 03, 2024
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The schizophrenia spectrum is a term used to group together several mental disorders that have shared features. This particular spectrum is a little confusing because it includes disorders that are considered psychotic, mood disorders, and diagnoses that are principally considered to be personality disorders. There is often a vast difference between the aspects of a personality disorder and psychosis, but the common thinking in this area is that all these conditions belong within the same group due to their commonalities.

There are a number of illnesses that are part of the spectrum, and naturally, schizophrenia is included in this list. So is schizoaffective disorder and schizophreniform disorder. The major personality disorders added to this are schizoid and schizotypal personality disorders. Some diagnoses like delusional disorder may be classified in more than one way.

The term schizophrenia is not just a single diagnosis, and people may express this disorder in many ways. They can be virtually devoid of emotion, with little or no interest in surroundings and no engagement with others. Alternately, many people suffer delusional thinking and a number of people have hallucinations. It’s possible to view all of the manifestations of schizophrenia as a spectrum within the schizophrenia spectrum. There are many potential ways this disease can be expressed, but they are typically fairly obvious if the disease is moderate to severe.

A related medical condition is schizoaffective disorder, which often has features of delusions or hallucinations in addition to severe swings in mood. It’s been called bipolar disorder plus schizophrenia. For both of these illnesses on the schizophrenia spectrum, common treatment is antipsychotic therapy and mood stabilization therapy for the schizoaffective. Another disease that may benefit from brief antipsychotic therapy is schizophreniform disorder, which tends to occur in short episodes instead of lasting like regular schizophrenia does.

Personality disorders included in the schizophrenia spectrum are schizotypal and schizoid personalities. Of these, only the schizotypal might regularly get treatment, while the schizoid personality can be functional, thought better served with therapy. Schizotypal illness is characterized by few social relations, bizarre behaviors, beliefs or thinking patterns, and difficulty fitting in. People with this condition usually seem different than the rest of society. The schizoid personality tends to be lacking in emotion, but can be highly functional. Difficulties tend to arise for this person if he or she is in a relationship with others, as dissatisfactions about ability for such a person to connect arise.

People with personality disorders are more often treated with psychotherapy than medications. Successful therapy can take significant time due to the entrenched belief systems or lack of affect in these clients. It might take many years for people to learn how to live with and compensate for a personality disorder.

Other illnesses like delusional disorder may be mild to severe. Degree to which these are curable depends on a variety of factors. Almost any condition on the schizophrenia spectrum is serious, and successful treatment is a complex matter that begins with accurate diagnosis.

The Health Board is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Tricia Christensen
By Tricia Christensen
With a Literature degree from Sonoma State University and years of experience as a The Health Board contributor, Tricia Christensen is based in Northern California and brings a wealth of knowledge and passion to her writing. Her wide-ranging interests include reading, writing, medicine, art, film, history, politics, ethics, and religion, all of which she incorporates into her informative articles. Tricia is currently working on her first novel.
Discussion Comments
By Anna10 — On May 25, 2011

@Andrade- I was diagnosed with a type of psychosis that falls within the schizophrenia spectrum. I was not happy with my diagnosis; I am not schizophrenic. But it turned out to be a blessing in disguise.

I’m now able to obtain health care services that wouldn't have been available to me otherwise. I've met others who’ve had similar experiences with their health insurance providing better coverage, because of the spectrum diagnosis. We may not like it, but if it helps us get treatment, it's OK.

By Andrade — On May 23, 2011

I have a very hard time accepting the concept of a schizophrenia spectrum. Culturally, schizophrenia has such a negative connotation that to place mood disorders in the same category seems detrimental to the patient.

If I did not have classic schizophrenia, I would not want to be diagnosed with a condition placed in the so-called schizophrenia spectrum.

Tricia Christensen
Tricia Christensen
With a Literature degree from Sonoma State University and years of experience as a The Health Board contributor, Tricia...
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