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Related Concept Videos

Drug Toxicity: Allergic Reactions01:30

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...
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Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
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Toxic Reactions: Overview01:26

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When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
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Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
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Burn injuries occur when the skin and underlying tissues are damaged due to exposure to heat, electricity, chemicals, radiation, or friction. They can vary in severity, from minor superficial burns to severe deep burns that can be life-threatening.
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Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
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A Standardized Procedure of Dressing Management for Toxic Epidermal Necrolysis
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Clinical considerations for epidermal necrolysis.

Ryan P Ellender1, Cacey W Peters1, Hannah L Albritton1

  • 1Department of Anesthesiology, Louisiana State University Health Sciences Center, New Orleans, LA.

Ochsner Journal
|September 25, 2014
PubMed
Summary

Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are severe skin reactions. Early diagnosis and treatment of epidermal necrolysis (EN) are crucial for patient outcomes.

Keywords:
Drug eruptionsStevens-Johnson syndromedrug hypersensitivity

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Area of Science:

  • Dermatology
  • Toxicology

Background:

  • Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are severe, life-threatening mucocutaneous reactions.
  • These conditions, collectively termed epidermal necrolysis (EN), primarily affect skin and mucous membranes, often triggered by medications.

Purpose of the Study:

  • To outline the diagnostic and management principles for epidermal necrolysis (EN).
  • To emphasize the importance of early recognition and intervention in SJS/TEN.

Main Methods:

  • A severity of illness score for predicting prognosis in EN patients was developed.
  • The scoring system incorporates seven prognostic factors.

Main Results:

  • EN management necessitates comprehensive supportive care, including intensive care unit or burn unit admission for extensive cases.
  • Key interventions include medication discontinuation, baseline diagnostics, establishing IV access, hydration, nutritional support, and meticulous wound and oral care.

Conclusions:

  • Prompt diagnosis, thorough workup, and effective treatment are essential to reduce morbidity and mortality in EN.
  • Enhanced education on potential causes and treatment is vital for clinicians managing these rare but severe conditions.