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Drug–drug interactions can precipitate toxicity through multiple mechanisms. Absorption interactions alter how drugs enter the body, exemplified when ranitidine increases the absorption of basic drugs, while cholestyramine decreases the levels of propranolol. Protein binding interactions occur when drugs share the same binding sites on plasma proteins. Drugs like aspirin and warfarin, when bound in excess, can lead to increased free drug concentrations, enhancing the potential for...
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Drug interactions occur when the pharmacological effect of one drug is altered by another substance, either enhancing or diminishing its activity. The drug whose activity is altered is known as the object drug, and the substance causing the alteration is called the agent drug or the precipitant. The net effects of these interactions are mostly undesirable, leading to decreased effectiveness or increased adverse effects. In rare cases, interactions can be beneficial, such as the enhanced...
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The concept of therapeutic equivalence (TE) in drugs with multiple indications is complex. A generic drug may be therapeutically equivalent to a brand-name product for one specific indication, but this doesn't necessarily mean it's equivalent for all other indications. Evidence of TE in one patient group and bioequivalence shown in healthy volunteers can support—but not confirm—TE for other indications. However, definitive proof requires individual clinical studies for each...
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Most chemical reactions in cells require enzymes—biological catalysts that speed up the reaction without being consumed or permanently changed. They reduce the activation energy needed to convert the reactants into products. Enzymes are proteins, that usually work by binding to a substrate—a reactant molecule that they act upon.
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Fenofibrate-Induced Lichenoid Drug Eruption: A Rare Culprit.

Fayeza Mohammed1, Laura L Wally1, Jeffrey E Karaban2

  • 1Department of Family Medicine, Presence Saint Joseph Hospital, Chicago, Illinois, USA.

Case Reports in Dermatology
|December 29, 2017
PubMed
Summary

Fenofibrate can cause a rare lichenoid drug eruption, a significant dermatologic side effect. A potential familial link suggests genetic factors may influence these reactions.

Keywords:
Drug eruptionFenofibrateLichenoidPhotosensitivityRash

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Area of Science:

  • Dermatology
  • Pharmacology
  • Genetics

Background:

  • Lichenoid drug eruptions are uncommon adverse reactions to various medications.
  • Identifying the causative agent is crucial for managing these dermatologic conditions.

Observation:

  • This report details a unique case where fenofibrate was identified as the cause of a lichenoid drug eruption.
  • The case also suggests a possible familial predisposition to this adverse reaction.

Findings:

  • Fenofibrate is a potential causative agent for lichenoid drug eruptions.
  • Genetic factors may play a role in the development of lichenoid drug eruptions, as indicated by a potential familial association.

Implications:

  • This finding highlights a rare but clinically significant dermatologic side effect of fenofibrate.
  • Understanding the characteristics of lichen planus, medication timing, UV exposure effects, and symptom persistence is key for diagnosis and treatment.
  • Further research into genetic mechanisms could improve the prediction and prevention of drug-induced lichenoid eruptions.