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30-AUGUST-2008 03:13:07 - allergy April 2008 Food allergy Classification and external resources ICD-10 T78.0 ICD-9 V15.0 OMIM 147050 MedlinePlus 000817 eMedicine med/806 MeSH D005512 A food allergy is an adverse immune response to a food protein.12 Food allergy is distinct from other adverse responses to food, such as food intolerance, pharmacologic reactions, and toxin-mediated reactions. food allergy pharmacologic toxins intolerance adverse immune response to a food protein caffeine tremors, cheese/wine tyramine migraine, scombroid histamine fish poisoning bacterial food poisoning, staphylotoxin lactose intolerance lactase deficiency The food protein triggering the allergic response is termed a food allergen. It is estimated that up to 12 million Americans have food allergies,3 and the prevalence is rising.4 Six to eight percent of children under the age of three have food allergies and nearly four percent of adults have them.5 Food allergy causes roughly 30,000 emergency room visits and 100 to 200 deaths per year in the United States. 6 The most common food allergies in adults are shellfish, peanuts, tree nuts, fish, and eggs5, and the most common food allergies in children are milk, eggs, peanuts, and tree nuts.5 Treatment consists of avoidance diets, in which the allergic person avoids all forms of the food to which they are allergic. For people who are extremely sensitive, this may involve the total avoidance of any exposure with the allergen, including touching or inhaling the problematic food as well as touching any surfaces that may have come into contact with it. Areas of research include anti-IgE antibody omalizumab, or Xolair and specific oral tolerance induction SOTI, which have shown some promise for treatment of certain food allergies. Persons diagnosed with a food allergy may carry an autoinjector of epinephrine such as an EpiPen or Twinject, wear some form of medical alert jewelry, or develop an emergency action plan, in accordance with their doctor. Contents 1 Signs and symptoms 2 The Big Eight 3 Rarer Food Allergies 4 Diagnosis 5 Pathophysiology 6 Causes 7 Prevention 8 Treatment 9 Statistics 10 Differing views 11 In children 12 Labeling laws 12.1 United States law 13 See also 14 Footnotes 15 External links Signs and symptoms Classic immunoglobulin-E IgE-mediated food allergies are classified as type-I immediate hypersensitivity reactions. These allergic reactions have an acute onset from seconds to one hour and may include:7 Angioedema: soft tissue swelling, usually involving the eyelids, face, lips, and tongue. Angioedema may result in severe swelling of the tongue as well as the larynx voice box and trachea, resulting in upper airway obstruction and difficulty breathing. Hives Itching of the mouth, throat, eyes, skin Nausea, vomiting, diarrhea, stomach cramps, and/or abdominal pain. This group of symptoms is termed gastrointestinal hypersensitivity or anaphylaxis. Rhinorrhea, nasal congestion Wheezing, scratchy throat, shortness of breath, or difficulty swallowing Anaphylaxis: a severe, whole-body allergic reaction that can result in death see below The reaction may progress to anaphylactic shock: A systemic reaction involving several different bodily systems including hypotension low blood pressure,loss of consciousness, and possibly death. Allergens most frequently associated with this type of reaction are peanuts, nuts, milk, egg, and seafood, though many food allergens have been reported as triggers for anaphylaxis. Food allergy is thought to develop more easily in patients with the atopic syndrome, a very common combination of diseases: allergic rhinitis and conjunctivitis, eczema and asthma.8 The syndrome has a strong inherited component; a family history of allergic diseases can be indicative of the atopic syndrome. Conditions caused by food allergies are classified into 3 groups according to the mechanism of the allergic response: 1. IgE-mediated classic: Type-I immediate hypersensitivity reaction symptoms described above Oral allergy syndrome 2. IgE and/or non-IgE-mediated: Allergic eosinophilic esophagitis Allergic eosinophilic gastritis Allergic eosinophilic gastroenteritis 3. Non-IgE mediated: Food protein-induced Enterocolitis syndrome FPIES Food protein proctocolitis/proctitis Food protein-induced enteropathy. An important example is Coeliac disease, which is an adverse immune response to the protein gluten. Milk-soy protein intolerance MSPI is a non-medical term used to describe a non-IgE mediated allergic response to milk and/or soy protein during infancy and early childhood. Symptoms of MSPI are usually attributable to food protein proctocolitis or FPIES. Heiner syndrome - lung disease due to formation of milk protein/IgG antibody immune complexes milk precipitins in the blood stream after it is absorbed from the GI tract. The lung disease commonly causes bleeding into the lungs and results in pulmonary hemosiderosis. The Big Eight The most common food allergies are:9 Milk allergy Egg allergy Peanut allergy Tree nut allergy Seafood allergy Shellfish allergy Soy allergy Wheat allergy These are often referred to as the big eight.10 They account for over 90% of the food allergies in the United States.11 The top allergens vary somewhat from country to country but milk, eggs, peanuts, treenuts, fish, shellfish, soy, wheat and sesame tend to be in the top 10 in many countries.citation needed Rarer Food Allergies Likelihood of allergy can increase with exposurecitation needed. For example, rice allergy is more common in East Asia where rice forms a large part of the diet.12 In Central Europe, celery allergy is more common. In Japan, allergy to buckwheat flour, used for Soba noodles, is more common. Red meat allergy is extremely rare in the general population, but a geographic cluster of people allergic to red meat has been observed in Sydney, Australia13. There appears to be a possible association between localised reaction to tick bite and the development of red meat allergy. Diagnosis The best method for diagnosing food allergy is to be assessed by an allergist. The allergist will review the patient's history and the symptoms or reactions that have been noted after food ingestion. If the allergist feels the symptoms or reactions are consistent with food allergy, he/she will perform allergy tests. Examples of allergy testing include: Skin prick testing is easy to do and results are available in minutes. Different allergists may use different devices for skin prick testing. Some use a bifurcated needle, which looks like a fork with 2 prongs. Others use a multi-test, which may look like a small board with several pins sticking out of it. In these tests, a tiny amount of the suspected allergen is put onto the skin or into a testing device, and the device is placed on the skin to prick, or break through, the top layer of skin. This puts a small amount of the allergen under the skin. A hive will form at any spot where the person is allergic. This test generally yields a positive or negative result. It is good for quickly learning if a person is allergic to a particular food or not, because it detects allergic antibodies known as IgE. Skin tests cannot predict if a reaction would occur or what kind of reaction might occur if a person ingests that particular allergen. They can however confirm an allergy in light of a patient's history of reactions to a particular food. Non-IgE mediated allergies cannot be detected by this method. Blood tests are another useful diagnostic tool for evaluating IgE-mediated food allergies. For example, the RAST RadioAllergoSorbent Testdetects the presence of IgE antibodies to a particular allergen. A CAP-RAST test is a specific type of RAST test with greater specificity: it can show the amount of IgE present to each allergen 14. Researchers have been able to determine predictive values for certain foods. These predictive values can be compared to the RAST blood test results. If a persons RAST score is higher than the predictive value for that food, then there is over a 95% chance the person will have an allergic reaction limited to rash and anaphylaxis reactions if they ingest that food.citation needed Currently, predictive values are available for the following foods: milk, egg, peanut, fish, soy, and wheat.151617 Blood tests allow for hundreds of allergens to be screened from a single sample, and cover food allergies as well as inhalants. However, non-IgE mediated allergies cannot be detected by this method. Blood testing methodologies currently available that can measure antibodies of IgG are not acceptable as a method of allergy evaluation.citation needed IgG-type anitbodies are not implicated in a food allergy reactions18reference does not support claimcitation needed. The significance of IgG anti-allergen antibodies was reviewed by the American Academy of Allergy and Immunology and found to be lackingcitation needed. Although a number of commercial labs sell tests that reportedly measure IgG antibodies against common allergens there is no clinical significance of such findingscitation needed. It is not established that these commercial assays actually measure the IgG antibodies that they report. Also, even if the assays are measuring IgG anti- allergen antibodies, the clinical significance of such antibodies is certainly not established. The significance of IgG anti-food antibodies is particularly questionable since the sera of many children with such antibodies in their serum tolerate the foods in question perfectly wellcitation needed. There was one study that showed a hypothetical possibility, in rheumatoid arthritis19 diarrhea, and constipation, among others. Food challenges, especially double-blind placebo-controlled food challenges DBPCFC, are the gold standard for diagnosis of food allergies, including most non-IgE mediated reactions. Blind food challenges involve packaging the suspected allergen into a capsule, giving it to the patient, and observing the patient for signs or symptoms of an allergic reaction. Due to the risk of anaphylaxis, food challenges are usually conducted in a hospital environment in the presence of a doctor. Additional diagnostic tools for evaluation of eosinophilic or non-IgE mediated reactions include endoscopy, colonoscopy, and biopsy. Important differential diagnoses are: Lactose intolerance; this generally develops later in life but can present in young patients in severe cases. This is due to an enzyme deficiency lactase and not allergy. It occurs in many non-Western people. Celiac disease; this is an autoimmune disorder triggered by gluten proteins such as gliadin present in wheat, rye and barley. It is a non-IgE mediated food allergy by definition. Irritable bowel syndrome IBS C1 esterase inhibitor deficiency herary angioedema; this rare disease generally causes attacks of angioedema, but can present solely with abdominal pain and occasional diarrhea. Pathophysiology For more details on this topic, see allergy. Generally, introduction of allergens through the digestive tract is thought to induce immune tolerance. In individuals who are predisposed to developing allergies atopic syndrome, the immune system produces IgE antibodies against protein epitopes on non-pathogenic substances, including dietary components.citation needed The IgE molecules are coated onto mast cells, which inhabit the mucosal lining of the digestive tract. Upon ingesting an allergen, the IgE reacts with its protein epitopes and release degranulate a number of chemicals including histamine, which lead to oedema of the intestinal wall, loss of fluid and altered motility. The product is diarrhea.citation needed Any food allergy has the potential to cause a fatal reaction. Causes The immune system's eosinophils, once activated in a histamine reaction, will register any foreign proteins they see. One theory regarding the causes of food allergies focuses on proteins presented in the blood along with vaccines, which are designed to provoke an immune response. Influenza vaccines and the Yellow Fever vaccine are still egg-based, but the Measles-Mumps-Rubella vaccine stopped using eggs in 1994.20 There is resistance to this theory, especially as it applies to autoimmune disease.21 Another theory focuses on whether an infant's immune system is ready for complex proteins in a new food when it is first introduced.22 One hypothesis at this time is the Hygiene hypothesis. While there is no proof for the hygiene hypothesis, people speculatecitation needed that in modern, industrialized nations, such as the United States, food allergies are more common due to the lack of early exposure to dirt and germs, in part due to the over use of antibiotics and antibiotic cleansers. This hypothesis is based partly on studies showing less allergy in third world countries.citation needed Some research suggestscitation needed that the body, with less dirt and germs to fight off, turns on itself and attacks food proteins as if they were foreign invaders. Antibiotics have also been implicated in Leaky Gut Syndrome which is another possible cause of food allergies. The fact that an increasing number of men in their thirties are developing food allergies suggests an environmental cause such as genetically modified crops entering the food chain. A lower incidence of food allergies in the developing world could also be due to differences in diet from the West and less exposure to food allergens. Prevention According to a report issued by the American Academy of Pediatrics, There is evidence that breastfeeding for at least 4 months, compared with feeding infants formula made with intact cow milk protein, prevents or delays the occurrence of atopic dermatitis, cow milk allergy, and wheezing in early childhood.23 Treatment The mainstay of treatment for food allergy is avoidance of the foods that have been identified as allergens. If the food is accidentally ingested and a systemic reaction occurs, then epinephrine best delivered with an autoinjector of epinephrine such as an Epipen or Twinject should be used. It is possible that a second dose of epinephrine may be required for severe reactions.citation needed The patient should also seek medical care immediately. At this time, there is no cure for food allergies.24 There are no allergy desensitization or allergy shots available for food allergies.citation needed Some doctors feel they do not work in food allergies because even minute amounts of the food in question or even food extracts as in the case of allergy shots can cause an allergic response in many sufferers. According to experts at the BA Festival of Science in Norwich, England, vaccines can in theory be created using genetic engineering to cure allergies. If this can be done, food allergies could be eradicated in about ten years.25 Statistics For reasons that are not entirely understood, the diagnosis of food allergies has apparently become more common in Western nations in recent times.4 In the United States food allergy affects as many as 5% of infants less than three years of age26 and 3% to 4% of adults.27 There is a similar prevalence in Canada.28 The most common food allergens include peanuts, milk, eggs, tree nuts, fish, shellfish, soy, and wheat - these foods account for about 90% of all allergic reactions.citation needed Differing views Various medical practitioners have a differing views on food allergies. Irritable Bowel Syndrome IBS patients have been studied with regards to food allergies. Some studies have reported on the role of food allergy in IBS; only one epidemiological study on functional dyspepsia and food allergy has been published. However, since 2005 several studies have demonstrated strong correlation between IgG and/or IgE food allergy and IBS symptoms 2930 31 The mechanisms by which food activates mucosal immune system are incompletely understood, but food specific IgE and IgG4 appeared to mediate the hypersensitivity reaction in a subgroup of IBS patients. Specific chemicals and receptors have been demonstrated to be critical in food allergy development in murine models.32 Exclusion diets based on skin prick test, RAST for IgE or IgG4, hypoallergic diet and clinical trials with oral disodium cromoglycate have been conducted, and some success has been reported in a subset of IBS patients.33 Studies comparing skin prick testing and ELISA blood testing have found that the results of skin prick testing correlate poorly with symptoms of irritable bowel syndrome that correlate with food allergies demonstrated through ELISA testing and dietary challenge. 34 Extensive clinical experience has demonstrated significant improvement of patients with IBS whose ELISA-based food allergy testing is positive and where treatment includes a careful exclusion diet. 35 In addition, many practitioners of alternative medicine ascribe symptoms to food allergy where other doctors do not. The causal relationships between some of these conditions and food allergies have not been studied extensively enough to provide sufficient evidence to become authoritative. The interaction of histamine with the nervous system receptors has been demonstrated, but more study is needed.36 Other immune response effects are commonly known swelling, irritation, etc., but their relationships to some conditions has not been extensively studied. Examples are arthritis, fatigue, headaches, and hyperactivity. Nevertheless, hypoallergenic diets reportedly can be of benefit in these conditions, indicating that the current medical views on food allergy may be too narrow. Holford and Brady 2005 suggest three levels of response; classical immediate-onset allergy IgE, delayed-onset allergy giving a positive response on an ELISA IgG test but rarely on an IgE skin prick test, and food intolerance non-allergic, and claim the last two to be more common.37 It is important to note that IgG is present in the body and is known to respond to foods. So some medical practitioners, especially allergists, claim that there is no predictive value to these types of tests, despite the studies cited above. In children Milk and soy allergies in children can often go undiagnosed for many months, causing much worry for parents and health risks for infants and children. Many infants with milk and soy allergies can show signs of colic, blood in the stool, mucous in the stool, reflux, rashes and other harmful medical conditions.citation needed These conditions are often misdiagnosed as viruses or colic. Some children who are allergic to cow's milk protein also show a cross sensitivity to soy-based products. 38 There are infant formulas in which the milk and soy proteins are degraded so when taken by an infant, their immune system does not recognize the allergen and they can safely consume the product. Hypoallergenic infant formulas can be based on hydrolyzed proteins, which are proteins partially predigested in a less antigenic form. Other formulas, based on free amino acids, are the least antigenic and provide complete nutrition support in severe forms of milk allergy. About 50% of children with allergies to milk, egg, soy, and wheat will outgrow their allergy by the age of 6. Those that don't, and those that are still allergic by the age of 12 or so, have less than an 8% chance of outgrowing the allergy 39. Peanut and tree nut allergies are less likely to be outgrown, although evidence now shows 40 that about 20% of those with peanut allergies and 9% of those with tree nut allergies 41 will outgrow their allergies. In such a case, they need to consume nuts in some regular fashion to maintain the non-allergic status.citation needed This should be discussed with a doctor. Those with other food allergies may or may not outgrow their allergies. Labeling laws In response to the risk that certain foods pose to those with food allergies, countries have responded by instituting labeling laws that require food products to clearly inform consumers if their products contain major allergens or by-products of major allergens. United States law Under the Food Allergen Labeling and Consumer Protection Act of 2004 Public Law 108-282, companies are required to disclose on the label whether the product contains a major food allergen in clear, plain language. The allergens have to clearly be called out in the ingredient statement. Most companies are responsible enough to list allergens in a statement separate from the ingredient statement.42 See also Oral Allergy Syndrome Medical emergency Mast cell Footnotes The references used in this article may be clearer with a different or consistent style of citation, footnoting, or external linking. ^ Frequently Asked Questions ^ Allergy Glossary of Terms - Allergy glossary - Revolution Health ^ Food Allergy Media QA PDF. Food Allergy and Anaphylaxis Network. Retrieved on 2008-01-26. ^ a b Kagan, Rhoda Sheryl January 22, 2003. Food Allergy: An Overview. Environmental Health Perspectives 111 2. doi:10.1289/ehp.5702. ^ a b c National Institute of Allergy and Infectious Diseases July 2004. NIH Publication No. 04-5518: Food Allergy: An Overview PDF 35. ^ Food Allergy and Anaphylaxis Network 2007. Food Allergy Facts and Statistics PDF. ^ MedlinePlus Encyclopedia 000817 Food allergy ^ ICD9 Other atopic dermatitis and related conditions ^ Food Allergy Facts Figures. Asthma and Allergy Foundation of America. ^ Food Additives and Ingredients Association FAIA - food allergy and intolerance. Allergy Intolerance. Food Additives and Ingredients Association. Retrieved on 2006-10-26. ^ Common Food Allergies. Asthma and Allergy Foundation of America. ^ Rice Allergy - Page 2. HealthCentersOnline 2006. Retrieved on 2006-10-26. ^ One tick red meat could do without, http://www.theaustralian.news.com.au/story/0,25197,23667445-23289,00.html ^ What is a RAST test ? What is a CAP-RAST test?. kidswithfoodallergies.org. ^ Sampson, HA; Ho DG Oct. 1997. Relationship between food-specific IgE concentrations and the risk of positive food challenges in children and adolescents. J Allergy Clin Immunol. 100 4: 444-51. doi:10.1016/S0091-67499770133-7. PMID 9338535. ^ Sampson, HA May 2001. Utility of food-specific IgE concentrations in predicting symptomatic food allergy. J Allergy Clin Immunol. 107 5: 891-6. doi:10.1067/mai.2001.114708. PMID 11344358. ^ Garcia-Ara, C; Boyano-Martinez T, Diaz-Pena JM, et al. Jan 2001. Specific IgE levels in the diagnosis of immediate hypersensitivity to cows' milk protein in the infant. Allergy Clin Immunol. 2001 107 1: 185-90. doi:10.1067/mai.2001.111592. PMID 11150010. ^ IgE - The Allergic Antibody. Asthma and Allergy Foundation of America. ^ M Hvatum, L Kanerud, R Hällgren and P Brandtzaeg. 2006 The gut-joint axis: cross reactive food antibodies in rheumatoid arthritis; Gut 2006;55:1240-1247. PMID 16484508. ^ Guide to Vaccine Ingredients That May Cause Allergic Reactions - DrGreene.com. Greene Ink, Inc 2006. Retrieved on 2006-10-30. The current measles-mumps-rubella vaccine MMR does not contain a significant amount of egg proteins but two other vaccines do. Even those with dramatic egg allergies are extremely unlikely to have an anaphylactic reaction to the MMR. ^ Do Vaccines Cause Asthma, Allergies Or Other Chronic Diseases? Reviews Of Scientific Data Uphold Vaccine Safety, ScienceDaily 2003-03-04. Retrieved on 2006-10-30. ^ egg allergy information - info on this food allergy and can the allergy be cured. The British Egg Information Service. Retrieved on 2006-10-30. ^ Effects of Early Nutritional Interventions on the Development of Atopic Disease in Infants and Children: The Role of Maternal Dietary Restriction, Breastfeeding, Timing of Introduction of Complementary Foods, and Hydrolyzed Formulas. American Academy of Pediatrics. Retrieved on 2008-01-09. ^ Food Allergy Facts Figures. Asthma and Allergy Foundation of America. Retrieved on 2007-03-12. ^ Food allergies 'gone in 10 years'. BBC News 2006-09-09. Retrieved on 2006-09-09. ^ Sampson H 2004. Update on food allergy. J Allergy Clin Immunol 113 5: 805-819. doi:10.1016/j.jaci.2004.03.014. ^ Sicherer S, Sampson H 2006. 9. Food allergy. J Allergy Clin Immunol 117 2 Suppl Mini-Primer: S470-5. doi:10.1016/j.jaci.2005.05.048. PMID 16455349. ^ Food Allergies and Intolerance. Health Canada. ^ Zar S, Mincher L, Benson MJ, Kumar D. 2005. Food-specific IgG4 antibody-guided exclusion diet improves symptoms and rectal compliance in irritable bowel syndrome. Scand J Gastroenterol. 2005 Jul;407:800-7. PMID: 16109655 ^ Drisko J, Bischoff B, Hall M, McCallum R. 2006. Treating irritable bowel syndrome with a food elimination diet followed by food challenge and probiotics. J Am Coll Nutr. 2006 Dec;256:514-22. PMID: 17229899 ^ Mekkel G, Barta Z, Ress Z, Gyimesi E, Sipka S, Zeher M. 2007. Increased IgE-type antibody response to food allergens in irritable bowel syndrome and inflammatory bowel diseasesArticle in Hungarian. Orv Hetil. 2005 Apr 24;14617:797-802. PMID: 17918636 ^ Ping-Chang Yanglow, Zhou Xinglow ,Cecilia M. Berin, Johan D. Soderholm, Bai-Sui Fenglow, Linda Wulow and Calvin Yehlow 2007. TIM-4 Expressed by Mucosal Dendritic Cells Plays a Critical Role in Food Antigen-Specific Th2 Differentiation and Intestinal Allergy. Gastroenterology Volume 133, Issue 5, November 2007, Pages 1522-1533 PMID: 17915221 ^ Park MI, Camilleri M. 2006. Is there a role of food allergy in irritable bowel syndrome and functional dyspepsia? A systematic review. Neurogastroenterol Motil. 2006 Aug;188:595-607. PMID: 16918724 ^ Zar, Sameer; Benson, Martin J.; Kumar, Devinder 2005. Food-specific serum IgG4 and IgE titers to common food antigens in irritable bowel syndrome. Am J Gastroenterol. 2005 Jul;1007:1550-7. ^ Wangen, Stephen O. The Irritable Bowel Syndrome Solution. 2006. ISBN 0-9768537-8-7. Excerpted with author's permission at The IBS Treatment Center ^ Wood, J.D. 2006 Histamine, mast cells, and the enteric nervous system in the irritable bowel syndrome, enteritis, and food allergies. Gut. 2006 Apr;554:445-7. ^ Patrick Holford and James Braly 2005. Hidden Food Allergies: Is What You Eat Making You Ill? Piatkus Books. ISBN 0-7499-2602-3. ^ Policy Statement: Hypoallergenic Infant Formulas. American Academy of Pediatrics. ^ What Are Food Allergies? Food Allergy Summary. Asthma and Allergy Foundation of America. ^ Outgrowing food allergies. Children's Memorial Hospital. ^ The natural history of tree nut allergy. Journal of Allergy Clinical Immunology. ^ Link to FDA website on labeling law External links Food portal National Institute of Allergy and Infectious Diseases Asthma and Allergy Foundation of America American Academy of Allergy Asthma Immunology - Patient/Public Education: Fast Facts Contains further references to JACI publications American College of Allergy, Asthma Immunology Latin American Women's Asthmatic Skin x20051103230534239900 at GPnotebook General Practice Notebook 16-185d. at Merck Manual of Diagnosis and Therapy Home ion v d e Food science Allergy · Chemistry · Engineering · Law · Microbiology · Packaging · Processing · Quality · Foodservice catering · Technology · Nutrition · Product development · Sensory analysis discrimination testing · Superfood v d e Health science - Medicine - Allergic conditions Respiratory system Allergic rhinitis · Asthma · Hypersensitivity pneumonitis · Eosinophilic pneumonia · Churg-Strauss syndrome · Allergic bronchopulmonary aspergillosis · Farmer's lung Skin Angioedema · Urticaria · Atopic dermatitis · Allergic contact dermatitis · Hypersensitivity vasculitis Blood and immune system Serum sickness Circulatory system Anaphylaxis Digestive system Coeliac disease · Eosinophilic gastroenteritis · Food allergy · Milk intolerance Nervous system Eosinophilic meningitis Genitourinary system Acute interstitial nephritis Other conditions Drug allergy · Allergic conjunctivitis v d e Immune disorders: Hypersensitivity and autoimmune diseases I IgE Allergy Food allergy · Atopy Atopic dermatitis · Anaphylaxis · Urticaria · Hay fever II IgM, IgG ADCC · Pernicious anemia · Hemolytic disease of the newborn · Penicillin allergy autoimmune, cytotoxic: Idiopathic thrombocytopenic purpura · Bullous pemphigoid · Autoimmune hemolytic anemia · Goodpasture's syndrome · Pemphigus vulgaris · Rheumatic fever autoimmune, type 5/receptor: Graves' disease · Myasthenia gravis III Immune complex Serum sickness · Arthus reaction · Hypersensitivity vasculitis · Reactive arthritis · Henoch-Schönlein purpura · Farmer's lung · Post-streptococcal glomerulonephritis autoimmune: Systemic lupus erythematosus · Subacute bacterial endocarditis IV T-cells Contact dermatitis · Cell-mediated immunity · Mantoux test · Graft-versus-host disease autoimmune: Temporal arteritis · Diabetes mellitus type 1 · Hashimoto's thyroiditis · Guillain-Barré syndrome · Multiple sclerosis · Rheumatoid arthritis · Coeliac disease Unknown/ multiple Autoimmune hepatitis · Transplant rejection Retrieved from http://en..org/wiki/Food_allergy Categories: Allergology | Food science | Gastroenterology | Immune system disorders | Food allergiesHidden categories: Articles needing additional references from April 2008 | All articles with statements | Articles with statements since February 2007 | Articles with statements since June 2008 | references cleanup Views Article Discussion this page History Personal tools Log in / create account Navigation Main page Contents Featured content Current events Random article Search Go Search Interaction Community portal Recent changes Contact Donate to Help Toolbox What links here Related changes Upload file Special pages Printable version Permanent link Cite this page Languages Deutsch Español Français Ã?slenska Nederlands 日本語 ‪Norsk bokmÃ¥l‬ Português 䏿–‡ This page was last modified on 9 August 2008, at 16:32
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