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Schizophrenia

Einstein Health Glossary

ICD 10 - F20

What is Schizophrenia?

Schizophrenia is a mental disorder that affects a person's thinking, emotions, and behavior. It is characterized by disorganized thoughts, hallucinations, delusions, lack of motivation, and significant changes in the perception of reality.

Symptoms

The most common symptoms of schizophrenia include:

  • delusions: false and fixed beliefs that are not easily changed, even when confronted with contrary evidence
  • hallucinations: such as hearing voices, seeing things that are not there, and experiencing nonexistent tactile sensations
  • disorganized thinking: difficulty organizing thoughts and expressing ideas coherently
  • disorganized behavior: inappropriate or unpredictable behavior, especially with strangers
  • affective flattening: limited emotional expression, with little or no display of feelings
  • social withdrawal: social isolation and difficulty establishing interpersonal relationships

Causes

The exact cause of schizophrenia is not known, but it is believed to involve a combination of factors, such as:

  • genetic factors: people with first-degree relatives with schizophrenia may have a higher risk of developing the disorder
  • neurobiological factors: changes in brain function, where structural abnormalities may play a role. As an example, dopamine, a neurotransmitter, is involved in schizophrenia, causing dysfunction in this system, particularly hyperactivity or hypersensitivity in certain brain areas
  • environmental factors: during fetal development, such as viral infections, malnutrition, complications during pregnancy or childbirth
  • psychosocial factors: stressful events, such as trauma, abuse, or chronic stress

Diagnosis

The diagnosis of schizophrenia involves a clinical process conducted by a mental health professional, such as a psychiatrist. To be diagnosed with schizophrenia, specific criteria defined in the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), a widely used reference in the mental health field, must be met.

Treatment

Treatment for schizophrenia involves a combination of medical, psychological, and social interventions. The goal is to control symptoms, improve quality of life, reduce relapses, and promote functional independence. The main treatment modalities include:

  • antipsychotic medications: drugs that help control prominent symptoms such as delusions and hallucinations
  • psychological therapy: such as cognitive-behavioral therapy (CBT), which helps manage symptoms, improve medication adherence, and address emotional and interpersonal issues
  • group therapy: provides a supportive environment where individuals with schizophrenia can share experiences, learn social skills, and receive peer support

Prevention

There is no definitive way to prevent schizophrenia, but some strategies may help reduce the risk of developing the disorder:

  • early identification and intervention: can help reduce symptom severity. If someone experiences concerning symptoms such as hallucinations, delusions, or disorganized thinking, seeking professional help promptly is recommended
  • avoiding substance abuse: alcohol and illicit drugs are associated with a higher risk of developing or worsening schizophrenia symptoms, especially in genetically predisposed individuals
  • stress reduction: stress can increase the risk of schizophrenia in genetically vulnerable individuals. Learning to manage stress through relaxation techniques, physical exercise, and emotional support is important