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Drug toxicity: Idiosyncratic Reactions

Drug toxicity: Idiosyncratic Reactions

Idiosyncratic drug reactions represent abnormal chemical responses that vary significantly among individuals, ranging from extreme sensitivity to low doses to insensitivity to high doses. These reactions often occur due to the drug's covalent binding with serum proteins, forming a foreign hapten that triggers an immunotoxicological response. The variability in drug reactions has a strong pharmacogenetic foundation, with genetic differences crucial in how individuals metabolize drugs. For...

Drug Toxicity: Allergic Reactions

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Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial exposure to a...

Drug Toxicity: Dose-Dependent Reactions

Drug Toxicity: Dose-Dependent Reactions

Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...

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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.
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Glucocorticoids, a class of anti-inflammatory drugs, are pivotal in treating moderate to severe Crohn's disease by inducing remission. They exhibit their anti-inflammatory action by inhibiting the production of inflammatory cytokines such as tumor necrosis factor (TNF)-α, interleukin (IL)-1, and chemokines like IL-8. In addition, they reduce the expression of inflammatory cell adhesion molecules and inhibit gene transcription of nitric oxide synthase, phospholipase A2, cyclooxygenase-2 (COX-2),...

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Updated: May 22, 2026

The Goeckerman Regimen for the Treatment of Moderate to Severe Psoriasis

The Goeckerman Regimen for the Treatment of Moderate to Severe Psoriasis

Published on: July 11, 2013

[Drug-related psoriasis].

C Piérard-Franchimont¹, G E Piérard

¹Service de Dermatopathologie,CHU de Liège. claudine.franchimont@ulg.ac.be

Revue Medicale De Liege

|May 23, 2012

Summary

This summary is machine-generated.

Certain medications can trigger or worsen psoriasis, a common genetic disorder. Awareness of these drug interactions is crucial for managing psoriasis effectively.

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Last Updated: May 22, 2026

The Goeckerman Regimen for the Treatment of Moderate to Severe Psoriasis

The Goeckerman Regimen for the Treatment of Moderate to Severe Psoriasis

Published on: July 11, 2013

Area of Science:

Dermatology
Pharmacology
Genetics

Context:

Psoriasis is a prevalent genetic skin condition.
Drug intake can initiate or aggravate psoriasis.
Several drug classes are known to affect psoriasis.

Purpose:

To identify drugs that influence psoriasis.
To understand the relationship between drug intake and psoriasis.
To inform clinical practice regarding drug-induced psoriasis.

Summary:

Psoriasis, a common genetic disorder, can be triggered or worsened by certain medications.
Known culprits include beta-blockers, lithium, antimalarials, NSAIDs, and tetracyclines.
Other drugs may also play a role in psoriasis development or exacerbation.

Impact:

Enhances understanding of drug-induced psoriasis.
Provides crucial information for clinicians managing psoriasis patients.
Aids in preventing medication-related psoriasis flares.