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Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin,...
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Case report of excessive hand sweating that alters blood sugar measurements.

Medwave·2015
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Related Experiment Video

Updated: Mar 24, 2026

Subcutaneous Angiotensin II Infusion using Osmotic Pumps Induces Aortic Aneurysms in Mice
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Hereditary angioedema type I: a case report.

Francisca Muñoz Peralta1, Eva Buller Vigueira2, Juana Cabello Pulido3

  • 1Servicio Andaluz de Salud, Centro de Salud Gonzalo Pérez Fabra, Paterna de Rivera, Cádiz, España. Address: Centro de Salud Gonzalo Pérez Fabra, Calle Molinos 14, Paterna de Rivera, Cádiz, España.

Medwave
|March 4, 2016
PubMed
Summary
This summary is machine-generated.

Hereditary angioedema (HAE) type I, a rare condition from C1 inhibitor deficiency, presents with varied symptoms. Early diagnosis and treatment with C1 inhibitor are crucial for managing life-threatening swelling in HAE patients.

Keywords:
complement C1 inhibitor proteindiagnoseshereditary angioedema type I

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Area of Science:

  • Immunology
  • Genetics
  • Rare Diseases

Background:

  • Hereditary angioedema (HAE) is a rare genetic disorder characterized by recurrent, unpredictable swelling.
  • HAE type I, the most common form, results from a deficiency in the complement C1 inhibitor (C1-INH).
  • Symptoms include edema of the skin, gastrointestinal mucosa, larynx, or pharynx, posing significant health risks.

Observation:

  • A male teenager presented with a history of alpha-1 antitrypsin deficiency since infancy.
  • The patient experienced angioedema on his arms and legs starting at age 11.
  • A diagnosis of hereditary angioedema type I was established one year after the onset of angioedema.

Findings:

  • The case highlights the diagnostic challenges in hereditary angioedema due to symptom heterogeneity and low prevalence.
  • Definitive diagnosis enabled appropriate management, focusing on preventing and treating acute swelling episodes.
  • Treatment involves C1 inhibitor administration to manage or prevent life-threatening angioedema attacks.

Implications:

  • This case underscores the importance of considering HAE in patients with recurrent angioedema, even with co-existing conditions.
  • Timely diagnosis and specific treatment are vital for improving patient outcomes and quality of life.
  • Family physicians play a critical role in the early recognition and management of hereditary angioedema.