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Related Concept Videos

Psychosis and Antipsychotic Drugs: Overview01:28

Psychosis and Antipsychotic Drugs: Overview

The term "psychosis" refers to a spectrum of mental disorders characterized by abnormal thoughts, perceptions, and behaviors. It can manifest as mood disorders, dementia, delirium with psychotic features, substance-induced psychosis with psychotic features, brief psychotic disorder, delusional disorder, schizoaffective disorder, and schizophrenia. Among all these disorders, schizophrenia is the most common psychotic disorder, affecting 1% of the worldwide population. Psychotic symptoms in all...
Psychosis: Goals of Pharmacotherapy01:26

Psychosis: Goals of Pharmacotherapy

Antipsychotic drugs are a crucial treatment method for acute and chronic psychoses, bipolar illness, and behavioral disorders. The selection of these drugs depends on several factors, including the state of the disease, clinical judgment, possible drug interactions, and the patient's sensitivity to adverse effects. In immediate scenarios, such as delirium and dementia, short-term treatment with low doses of high-potency typical or atypical agents can effectively manage symptom exacerbation. For...
Antipsychotic Drugs: Typical and Atypical Agents01:21

Antipsychotic Drugs: Typical and Atypical Agents

Antipsychotic drugs are classified into first-generation (typical) drugs including phenothiazines; and second-generation (atypical) drugs. Chlorpromazine hydrochloride (Thorazine), a phenothiazine derivative, broadly impacts the central, autonomic, and endocrine systems. This drug, along with typical agents like haloperidol (Haldol), primarily works by antagonizing D2 receptors, thus reducing dopaminergic neurotransmission. However, typical antipsychotics can cause side effects such as sedation...
Drug Therapy01:28

Drug Therapy

The advent of drug therapy has profoundly shaped modern mental health care, providing targeted treatments for a range of psychological disorders. Psychotherapeutic drugs, classified into antianxiety, antidepressant, and antipsychotic medications, address symptoms across anxiety disorders, mood disorders, and schizophrenia. While these medications have transformed patient outcomes, they require careful management due to their potential side effects and limitations.
Antianxiety Medications
Antipsychotic Drugs: Therapeutic Uses and Side Effects01:21

Antipsychotic Drugs: Therapeutic Uses and Side Effects

Antipsychotic drugs primarily block dopamine and serotonin receptors and cholinergic, adrenergic, and histaminergic receptors, thereby reducing hallucinations and delusions in conditions like schizophrenia. However, they can trigger unwanted extrapyramidal effects such as dystonias, Parkinson-like symptoms, and tardive dyskinesia.
Despite these side effects, antipsychotics are used therapeutically for various purposes, including managing schizophrenia, preventing nausea and vomiting, curbing...
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...

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Related Experiment Video

Updated: Jun 16, 2026

Self-Administration of Drugs in Mouse Models of Feeding and Obesity
03:37

Self-Administration of Drugs in Mouse Models of Feeding and Obesity

Published on: June 8, 2021

Risperidone versus placebo for schizophrenia.

Ranganath D Rattehalli1, Mahesh B Jayaram, Michael Smith

  • 1Millfield House, Kirk Lane, Leeds, UK, LS19 7LX.

The Cochrane Database of Systematic Reviews
|January 22, 2010
PubMed
Summary
This summary is machine-generated.

Risperidone shows marginal short-term benefits for schizophrenia, but data is limited and potentially biased. Further independent trials are needed to confirm its clinical effectiveness and safety.

Related Experiment Videos

Last Updated: Jun 16, 2026

Self-Administration of Drugs in Mouse Models of Feeding and Obesity
03:37

Self-Administration of Drugs in Mouse Models of Feeding and Obesity

Published on: June 8, 2021

Area of Science:

  • Psychiatry
  • Pharmacology
  • Clinical Trials

Background:

  • Risperidone is a widely available generic antipsychotic medication.
  • Schizophrenia and schizophrenia-like psychoses are serious mental health conditions.

Purpose of the Study:

  • To evaluate the clinical efficacy and safety of oral risperidone compared to placebo.
  • To synthesize evidence from randomized clinical trials.

Main Methods:

  • Systematic search of the Cochrane Schizophrenia Group's Register and other sources.
  • Inclusion of randomized clinical trials comparing oral risperidone with placebo.
  • Data extraction and analysis using relative risks and weighted mean differences.

Main Results:

  • One study showed higher attrition rates with placebo, and fewer participants left the risperidone group due to lack of efficacy.
  • Risperidone did not significantly improve CGI global scores but reduced BPRS/PANSS scores.
  • Increased risk of weight gain and raised prolactin levels observed with risperidone; extrapyramidal effects were common.

Conclusions:

  • Risperidone may offer slight short-term clinical improvement, but evidence is limited and potentially biased.
  • The clinical meaningfulness of observed improvements is uncertain.
  • Further independent research is warranted to validate findings and assess long-term outcomes.