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Related Concept Videos

Psychological and Sociocultural Causes of Schizophrenia01:29

Psychological and Sociocultural Causes of Schizophrenia

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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...
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Biological Causes of Schizophrenia01:29

Biological Causes of Schizophrenia

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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...
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Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

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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...
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Schizophrenia01:17

Schizophrenia

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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...
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Genome-wide Association Studies-GWAS01:11

Genome-wide Association Studies-GWAS

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Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
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Pedigree Analysis01:35

Pedigree Analysis

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Overview
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Related Experiment Video

Updated: Jul 8, 2025

A Strategy to Identify de Novo Mutations in Common Disorders such as Autism and Schizophrenia
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A Strategy to Identify de Novo Mutations in Common Disorders such as Autism and Schizophrenia

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Association between schizophrenia and psoriasis: A two-sample bidirectional Mendelian randomization study.

Yanting Ou1,2, Xiaoyi Qi2, Yihan Zhang1,2

  • 1Department of Plastic Surgery, Peking University Shenzhen Hospital, Shenzhen, China.

Journal of Cosmetic Dermatology
|December 15, 2023
PubMed
Summary
This summary is machine-generated.

This study found genetic evidence that schizophrenia increases the risk of developing psoriasis. However, psoriasis does not appear to causally affect schizophrenia risk.

Keywords:
GWASMendelian randomizationpsoriasisschizophreniaskin disease

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Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
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Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry
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Area of Science:

  • Psychiatry and Dermatology
  • Genetic Epidemiology

Background:

  • Observational studies suggest a link between schizophrenia and psoriasis.
  • The causal relationship between these conditions remains unclear.

Purpose of the Study:

  • To investigate the potential causal association between schizophrenia and psoriasis using a bidirectional Mendelian randomization approach.

Main Methods:

  • A two-sample Mendelian randomization (MR) analysis utilized genome-wide association study data for schizophrenia (n=77,096) and psoriasis (n=462,933).
  • Inverse-variance weighted, MR-Egger, and weighted median methods were employed, alongside sensitivity analyses to ensure result robustness.

Main Results:

  • Genetically predicted schizophrenia was significantly associated with an increased risk of psoriasis (OR: 1.001, p=0.012).
  • No significant causal effect of genetically predicted psoriasis on schizophrenia was detected (OR: 0.221, p=0.145).
  • Sensitivity analyses revealed no evidence of pleiotropy or heterogeneity.

Conclusions:

  • This study provides genetic evidence supporting a causal link where schizophrenia may lead to an increased risk of psoriasis.
  • The findings contribute to understanding the complex interplay between psychiatric and dermatological conditions.