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Related Concept Videos

Biological Causes of Schizophrenia01:29

Biological Causes of Schizophrenia

Schizophrenia, a severe psychiatric disorder, arises from a complex interplay of biological factors, including genetic predisposition, structural brain abnormalities, neurotransmitter dysregulation, and developmental irregularities. These factors collectively contribute to the onset and progression of the disorder, which typically manifests in late adolescence or early adulthood.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin studies.
Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...
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.
Alzheimer Disease ll: Pathophysiology01:23

Alzheimer Disease ll: Pathophysiology

Alzheimer disease involves structural changes in the brain that begin long before symptoms appear. The most distinctive features are extracellular neuritic plaques and intracellular neurofibrillary tangles.Neuritic plaques form in the cerebral cortex and around blood vessels. These plaques contain a dense core of beta-amyloid (Aβ)—a toxic protein fragment that clumps outside neurons. The core is surrounded by damaged neuronal extensions, as well as reactive astrocytes and microglia. Abnormal...
Disorders of the Nervous Tissue01:28

Disorders of the Nervous Tissue

Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
Homeostatic Imbalances:
Alzheimer's disease manifests as a gradual decline in memory and cognitive abilities, attributed to the buildup of amyloid plaques and neurofibrillary tangles in the brain.
Parkinson's disease arises from the...

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Related Experiment Video

Updated: Jul 5, 2026

Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis
05:52

Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis

Published on: November 21, 2013

[Schizophrenia: neurodevelopmental disorder or degenerative brain process?].

G Gross1, G Huber

  • 1Universitäts-Nervenklinik, Bonn, Germany. gisela.gross@ukb.uni-bonn.de

Fortschritte Der Neurologie-Psychiatrie
|June 25, 2008
PubMed
Summary

Schizophrenia is increasingly viewed as a neurodevelopmental (ND) disorder, but evidence suggests it may be a distinct neuroregressive illness in most cases, not a continuous neurodegenerative process. This challenges the traditional ND hypothesis for many patients.

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Published on: September 24, 2013

Area of Science:

  • Neuroscience
  • Psychiatry
  • Neurobiology

Context:

  • Schizophrenia is increasingly conceptualized as a neurodevelopmental (ND) disorder.
  • Evidence includes premorbid personality traits, behavioral anomalies, and brain imaging findings.
  • However, the ND hypothesis faces challenges regarding brain development and progression patterns.

Purpose:

  • To critically evaluate the neurodevelopmental hypothesis of schizophrenia.
  • To explore alternative explanations for the observed brain changes and clinical course.
  • To investigate the progression patterns and potential neuroregressive aspects of schizophrenia.

Summary:

  • While some schizophrenia cases may have neurodevelopmental origins, the evidence does not conclusively support a universal ND model.
  • Brain imaging findings, such as ventricular enlargement, are not consistently explained by a purely developmental deficit.
  • Schizophrenia appears to be a transiently progressing disorder with periods of advancement and stabilization, rather than a continuously neurodegenerative process.
  • A subgroup of patients may experience a special, transient neuroregressive brain process, analogous to premature aging, rather than a typical ND disorder.

Impact:

  • Challenges the prevailing neurodevelopmental hypothesis for a significant portion of schizophrenia cases.
  • Suggests a potential shift towards understanding schizophrenia as a distinct neuroregressive illness with transient progression.
  • Opens new avenues for research into the underlying mechanisms and potential therapeutic targets for schizophrenia.
  • Highlights the heterogeneity of schizophrenia, with distinct subgroups potentially exhibiting different pathophysiological processes.