Latex Allergy and Natural Rubber Sensitization


Natural rubber latex is the milky sap of the rubber tree, Hevea brasiliensis. It is made into medical gloves, catheters and many other stretchy goods. For most people it causes no trouble at all. For a smaller group, contact with latex leads to a reaction that can be anything from dry, cracked hands to hives, wheezing, or a sudden drop in blood pressure.

Latex allergy has an unusual history. It emerged in the 1980s as what researchers called an epidemic, falling hardest on health care workers and on children who had many operations, and then declined sharply once hospitals changed the gloves they bought. This page explains the three different kinds of reaction that people call "latex allergy", who has been most affected, how the switch away from powdered gloves changed the numbers, the link between latex and certain fruits, how the allergy is diagnosed, and what remains uncertain. It goes into more depth than the short latex notes on the Contact Dermatitis and Spina Bifida pages.


Table of Contents

  1. What Natural Rubber Latex Is
  2. Three Different Reactions From the Same Glove
  3. Signs Hospitals Treat as Urgent
  4. Health Care Workers
  5. Children With Spina Bifida and Many Operations
  6. The Rise and Fall of an Epidemic
  7. The 2016 FDA Ban on Powdered Medical Gloves
  8. Latex Reactions During Surgery
  9. Latex-Fruit Syndrome
  10. How Latex Allergy Is Diagnosed
  11. What Latex-Free Care Means, as Reported
  12. Desensitization Research
  13. What Is Not Known
  14. Key Research Papers
  15. Connections
  16. Featured Videos

What Natural Rubber Latex Is

Raw latex is collected from rubber trees and treated with ammonia so that it does not clot before it reaches the factory. A 2000 review by United States government researchers describes what happens next: the ammonia breaks the natural latex proteins into smaller pieces, and the manufacturer then adds a long list of chemicals to turn the liquid into a finished rubber product. A person who touches a latex glove is therefore exposed to two different things at once: leftover plant proteins, and leftover manufacturing chemicals. The two cause different kinds of reaction.

The same review lists at least ten separate latex proteins that sensitized people make antibodies against, named Hev b 1 through Hev b 10 (from Hevea brasiliensis). Each differs in size and structure. Some of their building blocks also occur in other plant proteins, which helps explain why some people with latex allergy also react to certain fruits (see Latex-Fruit Syndrome below).

The review also points to the condition of the skin. In laboratory skin-penetration studies and in mice, latex proteins passed through scraped skin more easily, and mice with scraped skin started making latex antibodies sooner. The review concludes that skin condition matters in how latex allergy develops, while noting that much less is known about how sensitization starts than about the reactions that follow.

Three Different Reactions From the Same Glove

"Latex allergy" is used loosely for three quite different problems. Reviews of the subject separate them clearly, and the difference matters because only one of them can be life-threatening.

1. Irritant contact dermatitis

This is not an allergy. It is direct irritation of the skin from wearing gloves for long periods, sweating inside them, frequent hand washing, and the powders or chemicals on the glove. The skin becomes dry, red, rough and cracked where the glove sits. It does not involve the allergy antibodies described below, and it is easily mistaken for a true allergy. In a 2000 British study of health care workers, 43.6 percent reported symptoms consistent with either this irritant reaction or the delayed allergy described next. Irritated, broken skin is discussed on the Contact Dermatitis page.

2. Delayed allergic contact dermatitis (type IV)

This is a true allergy, but usually not to latex itself. It is a delayed reaction by immune cells in the skin to the chemicals added during rubber manufacture, mainly the "accelerators" that speed up the curing of rubber. The rash appears later rather than within minutes, is itchy and eczema-like, and can spread beyond the area the glove touched; the 2010 report below describes some patients with widespread dermatitis. It is diagnosed with patch testing rather than with blood tests for latex antibodies.

Because the trigger is the added chemical rather than the plant protein, switching to a synthetic glove does not always help. A 2010 report from a United States dermatology clinic described 23 patients with allergic contact dermatitis from rubber accelerators in gloves, seen over 2 years. Sixteen were health care workers from one institution whose rash began around the time it switched to "latex-safe" synthetic gloves. Their patch tests were positive to accelerator chemicals including carbamates, thiurams, 2-mercaptobenzothiazole and 1,3-diphenylguanidine, and chemical analysis found 2-mercaptobenzothiazole in 4 of 6 glove samples tested. The rash cleared in each of the 9 patients with follow-up who were given alternative gloves chosen from published information on glove composition. Three of the 23 also had an immediate latex allergy.

3. Immediate latex allergy (type I, IgE-mediated)

This is the dangerous form. The body makes allergy antibodies, called immunoglobulin E (IgE), against the latex proteins themselves. On later contact, those antibodies trigger an immediate reaction. A 2000 review lists the range: hives where the glove touched (contact urticaria), hives spreading over the body, swelling of the lips, eyes or throat (angioedema), runny nose, itchy red eyes, wheezing and narrowing of the airways, and anaphylaxis. A 2009 family-medicine review describes the full span of latex reactions as running from type IV contact dermatitis to type I reactions such as hives, airway narrowing and anaphylaxis.

The route of contact matters. The FDA's 2016 rule on powdered gloves describes significant risks when latex allergens are inhaled or reach internal tissue during surgery or during oral, vaginal, gynecological and rectal examinations. Airborne latex protein, carried on glove powder, reaches people who never touch the glove themselves (see The Rise and Fall of an Epidemic).

Signs Hospitals Treat as Urgent

The type I reactions listed above can progress to anaphylaxis. Emergency services and hospitals treat these signs after latex contact as an emergency: swelling of the lips, tongue or throat; trouble breathing or wheezing; hoarseness or a tight throat; widespread hives; dizziness, fainting or a sudden drop in blood pressure. During an operation the patient is asleep and cannot report symptoms. In a 2018 United Kingdom audit of severe allergic reactions during anesthesia from all causes, the most common first signs were low blood pressure (46 percent) and narrowing of the airways (18 percent), and every patient had low blood pressure during the episode. The general picture of anaphylaxis is covered on the Anaphylaxis page.

Health Care Workers

People who wear latex gloves all day for work have been the main adult group affected. Reviews also name rubber industry workers as a high-risk group.

The occupational side of latex allergy also includes asthma. The Asthma page covers asthma more broadly.

Children With Spina Bifida and Many Operations

The second group with very high rates of latex allergy is children who have many operations and procedures from early life. Children with spina bifida are the best-studied example, because many have operations from early life and repeated procedures afterwards. Reviews also list children with urinary tract and genital malformations, children who need repeated urinary catheterization, and children who have had multiple operations of any kind. A 2009 review notes that the risk appears greatest when surgeries or procedures happen within the first year of life.

Two studies show how much the picture changed once care became latex-free:

A 2023 review of latex allergy in children describes the condition as still a major health problem, especially in developing countries, where latex-free products may be less available. The Spina Bifida page covers the condition itself.

The Rise and Fall of an Epidemic

A 2017 review describes latex allergy as emerging "as an epidemic of anaphylaxis, occupational asthma, and clinical dilemmas in the 1980s". It credits a combination of research, government agencies, manufacturers and health policy with what it calls the "near elimination of a global epidemic".

The key change was the move away from powdered latex gloves. Glove powder, such as cornstarch-based powder, made gloves easier to pull on, but latex proteins stick to the powder. When gloves were snapped on and off, the powder carried latex protein into the air, where people breathed it in. Several studies tracked what happened when powdered gloves were removed:

A 2011 review argued that this decline had gone far enough that blanket hospital bans on all latex devices deserved a second look. It reported that low-protein, powder-free latex gloves are associated with a significant fall in type I latex reactions among health care workers, and that latex gloves tend to be stronger, more flexible and better accepted by clinicians than synthetic gloves.

The 2016 FDA Ban on Powdered Medical Gloves

In the United States, the Food and Drug Administration (FDA) published a final rule on December 19, 2016 (81 FR 91722), effective January 18, 2017, banning powdered surgeon's gloves, powdered patient examination gloves, and absorbable powder for lubricating a surgeon's glove.

According to the rule's text:

The FDA and Regulation section reports other FDA actions from their primary documents.

Latex Reactions During Surgery

The operating room was where latex allergy was most dangerous. Surgical gloves touch internal tissue, latex was present in many devices, and an anesthetized patient cannot report early symptoms. Surveys of allergic reactions during anesthesia show both how large a cause latex once was and how much it has faded.

Latex-Fruit Syndrome

Some people with latex allergy also react to certain plant foods, most often fresh fruits. This is called latex-fruit syndrome. It happens because some latex proteins and some fruit proteins have similar shapes, so antibodies made against latex also recognize the fruit.

The fruit side of this link is also noted on the Bananas, Avocado and Kiwifruit pages. Food allergy in general is covered on the Food Allergy page.

How Latex Allergy Is Diagnosed

Reviews describe diagnosis as starting with the history and then using tests to confirm it.

A positive test is not the same as an allergy. A 2000 British study tested the same group of health care workers with four blood tests and three skin prick preparations. Blood tests were positive in anywhere from 3.6 to 43.6 percent of the group, depending on the test, and skin prick tests in 2.9 to 14.3 percent. Of those tested, 9.1 percent reported symptoms that could fit type I allergy, and 43.6 percent reported symptoms consistent with type IV or irritant reactions. Most methods did not agree with each other, and none matched the reported type I symptoms. The authors concluded that the clinical history is essential and that relying on laboratory results alone could seriously overestimate how many people are sensitized.

The difference between sensitization (a positive test) and allergy (a positive test plus real reactions) runs through the whole subject. In the 2026 Japanese series, 105 patients had positive skin prick tests but only 10 were diagnosed with latex allergy.

What Latex-Free Care Means, as Reported

"Latex-free" or "latex-safe" care is the main measure reported in the studies above. As described in those studies and reviews, it includes:

"Latex-free" does not mean "allergen-free". The 2010 report on synthetic gloves showed that rubber accelerator chemicals in non-latex gloves still cause delayed contact dermatitis. A 2020 review describes prevention measures as the gold-standard approach for people with latex allergy.

Desensitization Research

A 2020 review states that the only treatment able to change the natural course of latex allergy, rather than just treat reactions, is specific desensitization (allergen immunotherapy), in which small, gradually increasing amounts of latex allergen are given to retrain the immune response.

The evidence for the under-the-tongue (sublingual) form is limited. A 2017 meta-analysis found 152 records but only 4 randomized controlled trials that could be pooled. Sublingual immunotherapy reduced the skin reaction to a glove provocation test (standardized mean difference −0.9, from 2 trials). It did not significantly improve symptom scores, antibody levels, skin prick results or medication use. The authors called for larger and more randomized trials.

What Is Not Known

What is well established, across many studies, is the main picture: latex proteins can cause a dangerous IgE allergy; health care workers and children with many early operations were most affected; airborne powder from latex gloves was a major source of sensitization; and removing powdered gloves and keeping high-risk children's care latex-free was followed by large falls in new cases. Questions about a specific reaction belong with a clinician who can take the full history.

Key Research Papers

  1. Bousquet J, Flahault A, Vandenplas O, Ameille J, Duron JJ, Pecquet C, et al. Natural rubber latex allergy among health care workers: a systematic review of the evidence. J Allergy Clin Immunol. 2006;118(2):447-54. PubMed PMID: 16890771
  2. Blumchen K, Bayer P, Buck D, Michael T, Cremer R, Fricke C, et al. Effects of latex avoidance on latex sensitization, atopy and allergic diseases in patients with spina bifida. Allergy. 2010;65(12):1585-93. PubMed PMID: 20659078
  3. Chung I, Manoj N, Ahmad K, Çinar EN, Perkin MR, Bridgens A, et al. Latex sensitization and allergy in children with spinal dysraphism: A meta-analysis. J Spinal Cord Med. 2026:1-12. PubMed PMID: 42831677
  4. Toraason M, Sussman G, Biagini R, Meade J, Beezhold D, Germolec D. Latex allergy in the workplace. Toxicol Sci. 2000;58(1):5-14. PubMed PMID: 11053535
  5. Pollart SM, Warniment C, Mori T. Latex allergy. Am Fam Physician. 2009;80(12):1413-8. PubMed PMID: 20000303
  6. Cao LY, Taylor JS, Sood A, Murray D, Siegel PD. Allergic contact dermatitis to synthetic rubber gloves: changing trends in patch test reactions to accelerators. Arch Dermatol. 2010;146(9):1001-7. PubMed PMID: 20855699
  7. Garabrant DH, Schweitzer S. Epidemiology of latex sensitization and allergies in health care workers. J Allergy Clin Immunol. 2002;110(2 Suppl):S82-95. PubMed PMID: 12170248
  8. Bernardini R, Catania P, Caffarelli C, Cardinale F, Franceschini F, Pelosi U, et al. Perioperative latex allergy. Int J Immunopathol Pharmacol. 2011;24(3 Suppl):S55-60. PubMed PMID: 22014926
  9. Arasi S, Barni S, Caminiti L, Castagnoli R, Giovannini M, Liotti L, et al. Latex Allergy in Children. J Clin Med. 2023;13(1):124. PubMed PMID: 38202131
  10. Kelly KJ, Sussman G. Latex Allergy: Where Are We Now and How Did We Get There? J Allergy Clin Immunol Pract. 2017;5(5):1212-1216. PubMed PMID: 28888250
  11. Allmers H, Brehler R, Chen Z, Raulf-Heimsoth M, Fels H, Baur X. Reduction of latex aeroallergens and latex-specific IgE antibodies in sensitized workers after removal of powdered natural rubber latex gloves in a hospital. J Allergy Clin Immunol. 1998;102(5):841-6. PubMed PMID: 9819303
  12. Allmers H, Schmengler J, Skudlik C. Primary prevention of natural rubber latex allergy in the German health care system through education and intervention. J Allergy Clin Immunol. 2002;110(2):318-23. PubMed PMID: 12170275
  13. Kelly KJ, Wang ML, Klancnik M, Petsonk EL. Prevention of IgE Sensitization to Latex in Health Care Workers After Reduction of Antigen Exposures. J Occup Environ Med. 2011;53(8):934-40. PubMed PMID: 21775898
  14. Malerich PG, Wilson ML, Mowad CM. The effect of a transition to powder-free latex gloves on workers' compensation claims for latex-related illness. Dermatitis. 2008;19(6):316-8. PubMed PMID: 19134434
  15. Kawai M, Kondo Y, Nakajima Y, Tsuge I, Yoshikawa T, Yagami A, et al. Changes in the characteristics of patients with latex allergy from 1999 to 2014. Fujita Med J. 2020;6(3):67-72. PubMed PMID: 35111524
  16. Palosuo T, Antoniadou I, Gottrup F, Phillips P. Latex medical gloves: time for a reappraisal. Int Arch Allergy Immunol. 2011;156(3):234-46. PubMed PMID: 21720169
  17. Dong SW, Mertes PM, Petitpain N, Hasdenteufel F, Malinovsky JM. Hypersensitivity reactions during anesthesia. Results from the ninth French survey (2005-2007). Minerva Anestesiol. 2012;78(8):868-78. PubMed PMID: 22441362
  18. Mertes PM, Volcheck GW, Garvey LH, Takazawa T, Platt PR, Guttormsen AB, et al. Epidemiology of perioperative anaphylaxis. Presse Med. 2016;45(9):758-67. PubMed PMID: 27181074
  19. Harper NJN, Cook TM, Garcez T, Farmer L, Floss K, Marinho S, et al. Anaesthesia, surgery, and life-threatening allergic reactions: epidemiology and clinical features of perioperative anaphylaxis in the 6th National Audit Project (NAP6). Br J Anaesth. 2018;121(1):159-171. PubMed PMID: 29935567
  20. Michel MP, Guillaume P, Aurélie G, Chantal K, Corinne LB, Sébastien F, et al. Paediatric perioperative hypersensitivity reactions: Analysis of the French GERAP network database. Pediatr Allergy Immunol. 2026;37(9):e70474. PubMed PMID: 42747994
  21. Kawasaki-Nagano M, Tamagawa-Mineoka R, Masuda K, Katoh N, Fukumoto T. Preoperative Questionnaire Evaluation and Testing for Latex Allergy: A Retrospective Study From 2015 to 2021. J Dermatol. 2026;53(8):1184-1188. PubMed PMID: 42210452
  22. Brehler R, Theissen U, Mohr C, Luger T. "Latex-fruit syndrome": frequency of cross-reacting IgE antibodies. Allergy. 1997;52(4):404-10. PubMed PMID: 9188921
  23. Gromek W, Kołdej N, Świtała S, Majsiak E, Kurowski M. Revisiting Latex-Fruit Syndrome after 30 Years of Research: A Comprehensive Literature Review and Description of Two Cases. J Clin Med. 2024;13(14):4222. PubMed PMID: 39064262
  24. Ricci G, Piccinno V, Calamelli E, Giannetti A, Pession A. Latex-fruit syndrome in Italian children and adolescents with natural rubber latex allergy. Int J Immunopathol Pharmacol. 2013;26(1):263-8. PubMed PMID: 23527732
  25. Blanco C, Diaz-Perales A, Collada C, Sánchez-Monge R, Aragoncillo C, Castillo R, et al. Class I chitinases as potential panallergens involved in the latex-fruit syndrome. J Allergy Clin Immunol. 1999;103(3 Pt 1):507-13. PubMed PMID: 10069887
  26. Pridgeon C, Wild G, Ashworth F, Egner W, Ward AM. Assessment of latex allergy in a healthcare population: are the available tests valid? Clin Exp Allergy. 2000;30(10):1444-9. PubMed PMID: 10998022
  27. Nucera E, Aruanno A, Rizzi A, Centrone M. Latex Allergy: Current Status and Future Perspectives. J Asthma Allergy. 2020;13:385-398. PubMed PMID: 33061465
  28. Sridharan K, Sivaramakrishnan G. Sublingual immunotherapy in patients with latex allergy: systematic review and meta-analysis of randomized controlled trials. J Dermatolog Treat. 2017;28(7):600-605. PubMed PMID: 28320227
  29. U.S. Food and Drug Administration. Banned Devices; Powdered Surgeon's Gloves, Powdered Patient Examination Gloves, and Absorbable Powder for Lubricating a Surgeon's Glove. Final rule. Federal Register. 2016;81:91722. Federal Register 2016-30382

PubMed Topic Searches

  1. Natural rubber latex allergy
  2. Latex-fruit syndrome
  3. Powder-free gloves and health care workers
  4. Latex allergy and spina bifida
  5. Latex and perioperative anaphylaxis
  6. Rubber accelerators and glove dermatitis

Connections