Positive symptoms of schizophrenia are those that are not typically seen in healthy individuals and include delusions, hallucinations, and disorganized speech.

Persecution delusions, in which the individual believes they are being followed, spied on, or harassed, are the most common type of delusion experienced by individuals with schizophrenia.

Negative symptoms of schizophrenia are those that involve a decrease or loss of normal functions and include avolition, alogia, and anhedonia.

The leading hypothesis regarding the cause of schizophrenia is that it is caused by a combination of neurodevelopmental abnormalities, genetic factors, and environmental factors.

Dopamine is thought to be involved in the pathophysiology of schizophrenia, with hyperactivity of the dopaminergic system being implicated in the positive symptoms of the disorder.

The most common treatment for schizophrenia is a combination of antipsychotic medication, psychotherapy, and social skills training.

The primary goal of antipsychotic medication in the treatment of schizophrenia is to reduce positive symptoms, such as delusions and hallucinations.

Cognitive-behavioral therapy, family therapy, and group therapy are all commonly used in the treatment of schizophrenia.

The primary goal of social skills training in the treatment of schizophrenia is to improve communication skills, problem-solving skills, and interpersonal relationships.

The prognosis for individuals with schizophrenia is variable, with some individuals experiencing significant improvement with treatment, while others may experience more persistent symptoms.

Family history of schizophrenia, prenatal exposure to toxins, and childhood trauma are all risk factors for developing schizophrenia.

Brief psychotic disorder is a brief, transient episode of psychosis that may occur in individuals with schizophrenia.

Residual schizophrenia is a type of schizophrenia characterized by prominent negative symptoms, such as avolition, alogia, and anhedonia.

The prodromal phase is the stage of schizophrenia that precedes the onset of positive symptoms and may include subtle changes in behavior, thinking, and mood.

Schizoaffective disorder is characterized by symptoms of both schizophrenia and a mood disorder, such as depression or bipolar disorder.