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Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
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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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Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence...
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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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Chronic urticaria and autoimmunity.

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  • 1College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada; Section of Dermatology, Department of Medicine, University of Calgary, Calgary, AB, Canada.

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Summary
This summary is machine-generated.

Chronic urticaria, often autoimmune, is linked to other autoimmune diseases like thyroid issues. Understanding these connections can guide better treatments for chronic hives.

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Area of Science:

  • Immunology
  • Dermatology
  • Endocrinology

Background:

  • Chronic urticaria (CU) involves daily hives lasting over six weeks.
  • Chronic idiopathic urticaria (CIU) is the most common form, lacking external triggers.
  • Autoimmune mechanisms, particularly autoantibodies to the IgE receptor (FcεRI), are implicated in over half of CIU cases.

Purpose of the Study:

  • To review the associations between chronic urticaria and autoimmune disorders.
  • To explore the link between chronic urticaria and thyroid disease.
  • To discuss therapeutic implications of these autoimmune correlations.

Main Methods:

  • Literature review of studies on chronic urticaria and autoimmune diseases.
  • Analysis of the proposed autoimmune pathogenesis of chronic urticaria.
  • Examination of clinical associations and epidemiological data.

Main Results:

  • A significant association exists between chronic urticaria and various autoimmune diseases, including thyroid disease, rheumatoid arthritis, lupus, Sjögren's syndrome, celiac disease, and type 1 diabetes.
  • Autoimmune mechanisms are a key factor in a substantial portion of chronic idiopathic urticaria cases.
  • The predisposition to self-reactivity is a potential underlying factor in chronic urticaria.

Conclusions:

  • Chronic urticaria frequently co-occurs with other autoimmune conditions, notably thyroid disease.
  • Identifying autoimmune comorbidities is crucial for managing chronic urticaria.
  • These associations suggest potential therapeutic strategies targeting autoimmune pathways for chronic urticaria treatment.