Autoimmunity is the failure of an organism to recognize its own constituent parts (down to the sub-molecular levels) as "Self", which results in an immune response against its own cells and tissues. Any disease that results from such an aberrant immune response is termed an autoimmune disease, the prominent examples being Systemic Lupus Erythematosus (SLE), Sjögren's syndrome and Rheumatoid Arthritis (RA).
The illusory misconception that an individual's immune system is totally incapable of recognising "self" antigens is not new. Paul Ehrlich, at the beginning of the twentieth century, proposed the concept of horror autotoxicus, wherein a 'normal' body does not mount an immune response against its own tissues. Any autoimmune response thus was perceived to be abnormal and postulated to be connected with human disease. Now, it is accepted that autoimmune responses are vital to the development and functioning of vertebrate immune system, and central to the development of immunological tolerance to self-antigens. The latter concept has been somewhat prematurely termed natural autoimmunity. Autoimmunity should not be confused with alloimmunity.

ACES Autoimmune Support Group - Disease information, email list, support group, and personal stories.
Addison's Disease and Type I Diabetes - Information about Schmidt's syndrome -- a polyglandular autoimmune syndrome involving adrenal insufficiency (Addison's disease) plus autoimmune thyroid disease and/or insulin-dependent diabetes mellitus.
Meta Description: [ Information, treatment, and interaction of Addison's
Diseases and type I diabetes, known as Schmidt's Syndrome or Polyglandular
Autoimmune Syndrome. ]
American Autoimmune Related Diseases Association - Includes extensive patient information about autoimmunity and autoimmune related diseases.
Meta Description: [ American Autoimmune Related Diseases Association Autoimmunity awareness and advocacy., Information about autoimmunity and autoimmune related diseases. The American Autoimmune Related Diseases Association. Take our autoimmunity survey ]
APECED - Provides information on this rare autoimmune disease affecting mainly the endocrine glands.
Meta Description: [ APECED syndrome is a very rare genetic syndrome involving the autoimmune system. It is a combination of several distinct disorders. ]
Auto-Immune Diseases - A description of what this means, with some examples of diseases and how it strikes.
Autoimmune-disease.com - Collection of online resources dealing with various autoimmune disorders.
Meta Description: [ Online Dictionary Net: Find Dictionaries on every topic: Medicine, Internet and, for every language: English, Spanish, French, Latin, German, etc, Online library of information on autoimmune diseases such as MS (multiple sclerosis), rheumatoid arthritis (RA), diabetes, psoriasis, thryroid disease... ]
Autoimmunity - the Hidden Link - Is there an Autoimmunity Gene and are the Autoimmune Diseases linked? This site explores these issues as well as looking at the personal story of a journey with atypical Crohn's Disease.
Meta Description: [ Is there an Autoimmunity Gene? Are the Autoimmune Diseases linked? ]
eMedicine Health - Fever in Adults - Consumer health resource center providing information on the causes, symptoms, and treatment of higher-than-normal body temperatures.
Meta Description: [ A fever is higher-than-normal body temperature. It is a symptom caused by a variety of illnesses.
Every one of us has experienced the wave of chills and exhaustion that a ... ]
How I Beat Relapsing Polychondritis - Changing your diet can make a difference. Don't live with your autoimmune disease, live without it.
Living With Chronic Illness - Dedicated to the education and support of those with an autoimmune disease.
Meta Description: [ Lupus (SLE), diagnosis, symptoms of lupus, tests, lupus FAQ, tips, forum, chat room & more ]
Polychondritis Educational Society - Relapsing Polychondritis is an uncommon, chronic, multisystem disorder characterized by recurrent episodes of inflammation of cartilaginous tissues. Information on symptoms, diagnosis, and treatment.
Meta Description: [ Relapsing Polychondritis (RP) is an rare, chronic, multi-system disorder characterized by recurrent episodes of inflammation of cartilaginous tissues. ]
Systemic Autoimmune Disease Research Center - Research center dedicated towards the understanding and treatment of autoimmune diseases in Western New York.
The Support Report - An educational newsletter serving the polychondritis community. Includes article index, bookmarks, files, and links.
Meta Description: [ The Support Report is the official publication of the Polychondritis Educational Society, ltd. The purpose of this publication is to provide timely and accurate educational information to the Relapsing Polychondritis (RPC) community. The Support Report covers Relapsing Polychondritis and its man... ]
The Voice of MCS - The voice of MCS is a site designed to increase awareness about MCS (Multiple Chemical Sensitivity)/E.I. (Environmental Illness) It offers support, resources and information.
Meta Description: [ The Voice of MCS is a site aimed at increasing awareness of Multiple Chemical Sensitivity. ]
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