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Psychological Problems

Schizophrenia and its explanations

  • 3 things to know
  • Component 01

Overview

The ICD's clinical characteristics, hallucinations and delusions, statistics by age, sex and ethnicity, the dopamine hypothesis and brain structure, social drift theory, and Daniel's study.

What you need to know

Answer each one before you reveal it.

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Key term

What is schizophrenia?

Key term

What clinical characteristics of schizophrenia does the ICD describe?

Key term

What is a hallucination?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is schizophrenia?

    Model answer

    Schizophrenia is a severe mental health problem in which a person's thinking, perception and sense of reality are disturbed. Schizophrenia affects how a person thinks, feels and behaves.

  2. 2

    What clinical characteristics of schizophrenia does the ICD describe?

    Model answer

    The ICD describes positive symptoms such as hallucinations, delusions and disorganised thinking. The ICD also describes negative symptoms such as lack of motivation and flattened emotion.

  3. 3

    What is a hallucination?

    Model answer

    A hallucination is a sensory experience of something that is not there. Hearing voices is the most common hallucination in schizophrenia.

  4. 4

    What is a delusion?

    Model answer

    A delusion is a firmly held false belief that does not change in the face of evidence. A person might believe they are being followed or controlled.

  5. 5

    What are the key statistics for schizophrenia?

    Model answer

    Schizophrenia affects roughly one in a hundred people during their lifetime. Symptoms usually begin in late adolescence or early adulthood.

  6. 6

    How do age and sex affect the onset of schizophrenia?

    Model answer

    Men tend to develop schizophrenia at a younger age than women, often in their late teens or early twenties. Women are more often diagnosed in their late twenties or later.

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