Overview
Latex allergy is a hypersensitivity reaction caused by exposure to proteins found in natural rubber latex derived from Hevea brasiliensis sap. It ranges from mild skin irritation to severe, life-threatening anaphylaxis. Latex allergy is recognized as an important occupational health hazard, particularly in healthcare settings where repeated exposure to latex-containing products is common.
Latex proteins can trigger immune responses through direct contact, inhalation of airborne particles, or mucosal exposure. Individuals with frequent exposure may develop sensitization over time, leading to progressive worsening of symptoms. Latex allergy is also associated with cross-reactivity to certain foods due to shared protein structures.
Symptoms
Symptoms of latex allergy vary based on the type and severity of the immune reaction. Skin and mucosal symptoms are common and include itching, redness, hives, contact dermatitis, and watery or itchy eyes. Respiratory symptoms may develop following inhalation exposure and include sneezing, runny or blocked nose, coughing, wheezing, chest tightness, and difficulty breathing. Early reactions often appear within minutes of exposure and may involve urticaria or nasal and eye irritation. Delayed reactions can present as persistent eczema or chronic skin inflammation. In severe cases, systemic reactions such as anaphylaxis may occur, characterized by swelling, low blood pressure, airway obstruction, shock, and potential loss of consciousness.
Causes
Latex allergy is caused by an immune response to latex proteins present in medical and consumer products. IgE-mediated reactions occur when latex-specific IgE antibodies bind to mast cells, triggering histamine release and immediate allergic symptoms. Delayed reactions are mediated by T-cells and result in contact dermatitis developing hours to days after exposure.
Non-immune irritant reactions can also occur due to chemical additives in latex products. Common sources of exposure include medical gloves, catheters, syringes, IV tubing, balloons, condoms, rubber bands, blood pressure cuffs, dental equipment, and elastic clothing. Inhalation of latex proteins attached to glove powder is a significant cause in healthcare environments. Cross-reactivity with foods such as banana, avocado, chestnut, and kiwi further contributes to allergic reactions in sensitized individuals.
Risk Factors
Several factors increase the risk of developing latex allergy. Healthcare workers are at high risk due to frequent occupational exposure. Individuals undergoing repeated surgical procedures are more likely to become sensitized. Workers in industries that manufacture or use latex products face increased exposure. People with existing food allergies, especially to banana, avocado, kiwi, or chestnut, have a higher likelihood of latex sensitization due to cross-reactivity.
A personal or family history of atopic conditions such as asthma, allergic rhinitis, or eczema also raises susceptibility. Prolonged and repeated contact with latex products further increases the risk of allergy development.
Prevention
Prevention of latex allergy focuses on minimizing exposure and early identification of sensitized individuals. Substituting latex products with non-latex alternatives, such as nitrile or vinyl gloves, is an effective preventive strategy. Avoiding powdered latex gloves reduces airborne latex protein exposure. Clear labeling of latex-containing products helps prevent accidental contact.
Individuals with known latex allergy should inform healthcare providers and workplaces to ensure latex-free environments. Avoidance of cross-reactive foods may be necessary in sensitized individuals. Education, workplace policies, and proper occupational safety measures play a key role in preventing sensitization and reducing the risk of severe allergic reactions.
