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Drug Toxicity: Allergic Reactions

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...
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Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
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The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
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A Standardized Procedure of Dressing Management for Toxic Epidermal Necrolysis
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Lyngbya dermatitis (toxic seaweed dermatitis).

Kimberly A Werner1, Laura Marquart, Scott A Norton

  • 1Walter Reed Army Medical Center, Washington, DC, USA. kimberlyawerner@gmail.com

International Journal of Dermatology
|July 28, 2011
PubMed
Summary

Lyngbya dermatitis, an irritant contact reaction to the alga Lyngbya majuscula, causes a blistering rash after saltwater exposure. This condition requires consideration in patients with acute dermatitis following ocean swimming.

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Area of Science:

  • Dermatology
  • Marine Biology
  • Toxicology

Background:

  • Lyngbya dermatitis is an irritant contact dermatitis caused by the blue-green alga Lyngbya majuscula.
  • This alga is prevalent in tropical and temperate marine environments globally.
  • Exposure typically results in a characteristic rash following water contact.

Observation:

  • A 13-year-old female presented with vesicles and papules on her abdomen after swimming.
  • The eruption appeared in a bathing suit distribution pattern.
  • Symptoms began with itching and burning, progressing to blisters and erosions.

Findings:

  • Histopathological examination confirmed acute irritant contact dermatitis.
  • The clinical presentation and history were consistent with Lyngbya dermatitis.
  • Lyngbya majuscule contains numerous bioactive compounds.

Implications:

  • Lyngbya dermatitis should be considered in the differential diagnosis of acute contact dermatitis.
  • Understanding the etiology is crucial for appropriate patient management and prevention.
  • Further research into the toxins of L. majuscule may yield therapeutic insights.