Schizophrenia Brain Scan: Can Brain Scans Help Diagnose Schizophrenia?

Schizophrenia is a mental health disorder and chronic condition that affects the way the brain functions. While diagnosis solely through brain imaging is not feasible, distinct differences exist between the brain scans of those with and without schizophrenia. To understand this connection, it may be helpful to explore the potential role of brain scans in diagnosing chronic schizophrenia, as well as the irregularities in brain structures that have been observed by doctors, researchers, and diagnostic experts. 

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What is schizophrenia?

Schizophrenia is a psychiatric disorder that affects approximately 1% of the population and can significantly impede an individual's well-being by disrupting typical brain function. It impacts cognitive function, memory, perception, and behavior, potentially posing an immediate danger to those experiencing severe symptoms.

Clinical guidelines define schizophrenia as a mental illness characterized by phases or stages. Individuals in certain stages may not recognize their symptoms, though others may. Symptoms listed in the diagnostic criteria include:

• Delusions: Delusions are persistent false beliefs despite evidence to the contrary, such as believing one’s thoughts or actions are controlled by others.
• Positive symptoms: Positive symptoms include hallucinations or other sensory perceptions of stimuli that do not exist, like seeing or hearing things.
• Disorganized or incoherent speech: Some people with schizophrenia may have difficulty organizing thoughts while speaking, leading to unclear expression.
• Unusual movements or behaviors: Actions that differ from typical behavior, such as random or absent movement, can also occur with schizophrenia. 
• Negative symptoms: Negative symptoms can include reduced facial expression, lack of motivation, or disorganized speech.

These symptoms can lead individuals with schizophrenia to become suspicious, paranoid, or fearful. They may neglect personal hygiene, experience depression, anxiety, and suicidal thoughts, and are more prone to substance use as a coping mechanism.

If you are experiencing suicidal thoughts or urges, call the 988 Suicide & Crisis Lifeline at 988 or text 988 to talk to a crisis provider over SMS. They are available 24/7 to offer support. 988 also offers an online chat for those with an internet connection.

If you are struggling with substance use, contact the SAMHSA National Helpline at (800) 662-4357 to receive support and resources.

How is schizophrenia diagnosed?

While brain scans cannot diagnose schizophrenia directly, catching symptoms early can aid in diagnosis. This condition is typically diagnosed through clinical interviews, which have been proven to be as effective in predicting outcomes as other tests in preventive medicine.

Professionals often use the following assessments to diagnose schizophrenia:

• The Scale for the Assessment of Positive Symptoms (SAPS) and the Scale for the Assessment of Negative Symptoms (SANS): These examinations utilize item-point scales. SAPS evaluates positive symptoms like hallucinations and delusions, while SANS focuses on negative symptoms such as decreased motivation and difficulty expressing emotions.
• The Positive and Negative Symptoms Scale (PANSS): This examination employs an interview format with 30 scored items to gauge symptom severity and treatment effectiveness.
• The Clinical Global Impression Schizophrenia (CGI-SCH) scale: This test evaluates the efficacy of antipsychotic treatment by assessing positive, negative, depressive, cognitive, and global symptoms. It measures illness severity and changes over time.
• The Clinical Assessment Interview for Negative Symptoms (CAINS): The CAINS assessment and the Brief Negative Symptom Scale (BNSS) are newer scales with 13 items designed to evaluate negative symptoms as improvements over older scales.

Additional studies show that 80% to 90% of those who develop psychotic symptoms experience an early or prodromal phase of schizophrenia, characterized by mild symptoms, cognitive issues, and a decline in functioning. Recognizing these symptoms may offer a chance for early intervention.

Brain imaging and schizophrenia

Currently, it's not possible to diagnose schizophrenia by looking at a brain scan. However, specific changes in the brain that show up on scans have been linked to schizophrenia. Studies on brain imaging are controversial, and theories about whether mental illnesses can be diagnosed with brain imaging are still being studied, with both supportive and negating evidence. 

Schizophrenia is increasingly seen as a disorder related to how the brain develops. Experts in clinical neuroscience suggest that problems during early brain development, before or around birth, as well as disruptions later on before psychosis starts, may play a role.

Studies show that people with schizophrenia often have differences in their brain regions, such as the temporal lobe. Specific in-depth study reviews have found that individuals with this condition tend to have smaller hippocampus, amygdala, thalamus, nucleus accumbens, and overall brain volumes compared to those without schizophrenia. Contrarily, schizophrenia patients tend to have larger pallidum and lateral ventricle volumes. One of the most noticeable changes in their brains may be the shrinkage or loss of brain cells in the hippocampus.

Healthcare providers might utilize safe, noninvasive brain imaging, scans, and tests during schizophrenia diagnosis, but they are not the only tools used for diagnosis. Possible schizophrenia brain scans include: 

• Magnetic Resonance Imaging (MRI): An MRI employs a powerful magnetic field and radio waves to generate two-dimensional or three-dimensional images within the body, which can be utilized to examine brain structures.
• Computed Tomography Scan (CT Scan): A computer constructs a three-dimensional image by utilizing multiple X-ray images, enabling the visualization of body structures from various perspectives.
• Electroencephalogram (EEG): An EEG evaluates the brain's electrical activity using electrodes that are painlessly attached to the scalp.

Support options 

With medical treatment, individuals diagnosed with schizophrenia may effectively manage their symptoms. A treatment plan that combines medication with supportive services and therapy is often the most successful approach. 

Medications like conventional antipsychotics (e.g., Haloperidol, Fluphenazine) and atypical antipsychotics (e.g., Quetiapine, Risperidone) may reduce hallucinations and psychotic episodes associated with schizophrenia, though they may also cause certain side effects. Research suggests that combining medication with non-pharmacological treatments like cognitive-behavioral therapy (CBT) can offer a more comprehensive approach to managing symptoms. 

CBT, a short-term, problem-focused therapy, aims to teach coping skills to help individuals manage difficult situations, develop better social and problem-solving skills, and reduce the severity of symptoms. 

However, it can be challenging for some people with schizophrenia to access in-person therapy. In these cases, online therapy through a platform like BetterHelp may provide affordable and flexible support that is beneficial for those seeking a therapist they can connect with from home. With an online platform, clients can also access resources like journaling prompts and weekly support groups.  

While the effectiveness of online therapy for schizophrenia requires further research, studies show that online CBT is equally as effective as in-person therapy for treating other mental health conditions, such as anxiety and depression, which are commonly comorbid with schizophrenia. 

Takeaway

Brain scans can reveal structural variations in the brains of individuals with schizophrenia. However, relying solely on brain scans is considered insufficient for diagnosing the condition. Instead, healthcare professionals diagnose schizophrenia through symptom assessment. If you or a loved one are experiencing symptoms of schizophrenia, seeking help from a medical or mental health professional is highly recommended.