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Related Concept Videos

Negative and Cognitive Symptoms of Schizophrenia01:30

Negative and Cognitive Symptoms of Schizophrenia

Negative symptoms of schizophrenia indicate a reduction or absence of typical behaviors and emotional responses found in healthy individuals, while positive symptoms reflect an excess or distortion of normal functioning.
Negative Symptoms
Negative symptoms of schizophrenia manifest as deficits in normal emotional and behavioral functioning, profoundly impacting daily life. Individuals with schizophrenia often display a flat affect, characterized by a near-total absence of emotional expression,...
Positive Symptoms of Schizophrenia: Hallucinations and Delusions01:30

Positive Symptoms of Schizophrenia: Hallucinations and Delusions

Schizophrenia is a complex mental health disorder that can manifest with various positive symptoms, including thought, movement, and behavior disorders. These symptoms significantly disrupt cognitive and motor functions, leading to profound effects on an individual's ability to engage with the world.
Thought Disorders
Disorganized and unusual thought processes mark thought disorders in schizophrenia. One key feature is disorganized speech, where an individual's conversation includes loosely...
Positive Symptoms Schizophrenia: Hallucinations and Delusions01:26

Positive Symptoms Schizophrenia: Hallucinations and Delusions

Schizophrenia is a complex psychiatric disorder characterized by a range of symptoms that significantly impact cognition, behavior, and emotional regulation. Among these, the positive symptoms stand out as they involve the addition or exaggeration of normal mental functions, deviating markedly from typical behavior and perception. Hallucinations and delusions are prominent positive symptoms, each profoundly affecting the individual's experience of reality.
Hallucinations
Hallucinations in...
Personality Disorders: Paranoid and Schizoid01:22

Personality Disorders: Paranoid and Schizoid

Personality disorders represent enduring cognition, affect, and behavior patterns that significantly deviate from societal norms. These maladaptive traits often lead to difficulties in various domains, including interpersonal relationships, occupational settings, and overall psychological well-being. Paranoid personality disorder and schizoid personality disorder are two distinct conditions marked by odd or eccentric behavior.
Paranoid Personality Disorder
Paranoid personality disorder is...
Psychological and Sociocultural Causes of Schizophrenia01:29

Psychological and Sociocultural Causes of Schizophrenia

Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...
Schizophrenia01:17

Schizophrenia

Schizophrenia, a term introduced by Swiss psychiatrist Eugen Bleuler in 1911, describes a severe psychological disorder marked by profound disruptions in attention, thought processes, language, emotion, and interpersonal relationships. The core feature of schizophrenia is psychosis — a state characterized by a fundamental detachment from reality. This disconnection manifests through distorted logic, impaired perception, and atypical behavior, severely affecting the lives of those diagnosed.

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Standardized Data Acquisition for Neuromelanin-Sensitive Magnetic Resonance Imaging of the Substantia Nigra
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Negative symptoms and negative schizophrenia.

S K Chaturvedi1, P S Gopinath, P J Mathai

  • 1Lecturer, Department of Psychiatry, National Institute of Mental Health & Neuro Sciences, Bangalore 560 029.

Indian Journal of Psychiatry
|October 4, 2011
PubMed
Summary
This summary is machine-generated.

Most chronic schizophrenic patients exhibit negative symptoms, often severely, though not correlated with age, sex, or illness duration. Subjective awareness of these prominent negative symptoms was notably poor.

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Last Updated: May 28, 2026

Standardized Data Acquisition for Neuromelanin-Sensitive Magnetic Resonance Imaging of the Substantia Nigra
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05:52

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Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Neuroscience

Background:

  • Negative symptoms are a core feature of schizophrenia, impacting patient functioning.
  • Understanding the prevalence and correlates of negative symptoms is crucial for treatment development.

Purpose of the Study:

  • To determine the frequency distribution of prominent negative symptoms in chronic schizophrenic patients.
  • To explore correlations between negative symptoms and demographic/illness variables.

Main Methods:

  • Utilized the Scale for Assessment of Negative Symptoms (SANS) for rating.
  • Assessed 30 chronic schizophrenic patients meeting DSM-III criteria.
  • Correlated symptom severity with age, sex, illness duration, and hospitalization duration.

Main Results:

  • 80% of patients displayed at least one negative symptom, with thought blocking absent.
  • Severe negative symptoms were present in approximately 40% of cases.
  • No significant correlations found between severe negative symptoms and age, sex, illness duration, hospitalization, or medication.

Conclusions:

  • Negative symptoms are highly prevalent in chronic schizophrenia, often severe.
  • Demographic and illness variables do not significantly predict the severity of negative symptoms.
  • Poor subjective awareness of negative symptoms suggests a need for targeted interventions.