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Parkinson's Disease: Treatment01:24

Parkinson's Disease: Treatment

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Neurodegenerative disorders, such as Parkinson's Disease (PD), involve the gradual and irreversible destruction of neurons in particular brain areas. These disorders exhibit standard features like proteinopathies, selective vulnerability of some neurons, and an interaction of intrinsic properties, genetics, and environmental influences in neural injury.
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of...
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Parkinson's Disease: Overview01:15

Parkinson's Disease: Overview

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Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is...
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Drugs Affecting Neurotransmitter Synthesis01:29

Drugs Affecting Neurotransmitter Synthesis

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Drugs affecting neurotransmitter synthesis can impact the adrenergic neuron and the synthesis of neurotransmitters. For example, α-methyltyrosine and carbidopa target specific enzymes involved in catecholamine synthesis. α-methyltyrosine inhibits the enzyme tyrosine hydroxylase, which converts tyrosine into dopamine. By blocking this enzyme, α-methyltyrosine reduces dopamine production and other catecholamines. Carbidopa, on the other hand, inhibits the enzyme dopa decarboxylase,...
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Drug Therapy01:28

Drug Therapy

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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
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Psychosis: Goals of Pharmacotherapy01:26

Psychosis: Goals of Pharmacotherapy

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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.
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Chemotherapy-Induced Nausea and Vomiting: Dopamine Receptor Antagonists01:29

Chemotherapy-Induced Nausea and Vomiting: Dopamine Receptor Antagonists

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Dopamine receptor antagonists, also known as antipsychotic agents, are critical in managing chemotherapy-induced vomiting. These antiemetic agents block dopamine receptors in the chemoreceptor trigger zone (CTZ), inhibiting signal transmission to the vomiting center. Antipsychotic agents encompass phenothiazines (PTZ), butyrophenones, benzamides, and thienobenzodiazepines (Zyprexa), which are utilized for their antiemetic and sedative properties.
Phenothiazines, such as prochlorperazine...
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Related Experiment Video

Updated: Jan 7, 2026

Induction and Assessment of Levodopa-induced Dyskinesias in a Rat Model of Parkinson's Disease
05:51

Induction and Assessment of Levodopa-induced Dyskinesias in a Rat Model of Parkinson's Disease

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Drug-Induced Parkinsonism: A Structured, Mechanism-Informed Approach to Identification and Management.

Beatriz De Faria Sousa1, Juan B Espinosa2,3

  • 1College of Medicine, Florida International University, Herbert Wertheim College of Medicine, Miami, USA.

Cureus
|January 5, 2026
PubMed
Summary

Drug-induced parkinsonism (DIP) is a reversible condition mimicking Parkinson's disease, often caused by medications and supplements. Early recognition and drug withdrawal are key to recovery.

Keywords:
clinical reasoningdiagnostic frameworkdopaminergic mechanismsdrug-induced parkinsonismiatrogenic neurologymedical educationmovement disorderspharmacovigilancepolypharmacyreversible parkinsonism

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Last Updated: Jan 7, 2026

Induction and Assessment of Levodopa-induced Dyskinesias in a Rat Model of Parkinson's Disease
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Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease

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Area of Science:

  • Neurology
  • Pharmacology
  • Clinical Medicine

Background:

  • Drug-induced parkinsonism (DIP) is an underrecognized secondary parkinsonism.
  • It can mimic idiopathic Parkinson's disease but is often reversible.
  • Newer agents like valproate and herbal supplements contribute to DIP.

Purpose of the Study:

  • To synthesize data on DIP from 2009-2025.
  • To provide a structured, mechanism-informed clinical approach for DIP.
  • To enhance clinician education and detection of preventable DIP.

Main Methods:

  • Narrative review of epidemiologic, mechanistic, and clinical data.
  • Analysis of studies on causes, prevalence, and diagnostic features of DIP.
  • Synthesis of evidence for a three-step clinical management approach.

Main Results:

  • DIP accounts for 15-20% of secondary parkinsonism, affecting older adults and women disproportionately.
  • Dopamine transporter imaging often shows preserved striatal uptake, differentiating DIP from neurodegenerative parkinsonism.
  • Recovery typically occurs within 6-12 months after drug withdrawal, though some may have persistent symptoms.

Conclusions:

  • A three-step approach (medication review, pattern recognition, withdrawal) aids DIP management.
  • This framework supports safer prescribing and enhances detection of this preventable condition.
  • Timely intervention and follow-up are crucial for confirming reversibility.