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Allergies to latex rubber have been identified as a serious concern for workers who become sensitized to latex gloves and other natural rubber-containing products such as medical supplies. Although the symptoms vary from case to case, the most common reaction to latex products is the development of dry, itchy, and irritated areas on the skin (irritant contact dermatitis), usually the hands.
Other reactions may include rashes and skin blisters which can spread away from the area of skin touched by the latex (allergic contact dermatitis). This reaction is similar to a poison ivy reaction.
A person may also be exposed by breathing in (inhaling) airborne latex particles (e.g., particles that are released when the gloves are removed). Because latex particles can become airborne, it may not be necessary for a person to have to touch a specific product that contains latex, as dusts containing the protein may settle on other surfaces.
More severe reactions may involve immediate hypersensitivity with respiratory symptoms such as runny nose, sneezing, itchy eyes, scratchy throat and asthmatic symptoms including coughing, wheezing, shortness of breath, chest tightness and more severe reactions such as swelling of the face, lips and airways.
Symptoms typically will quickly subside with avoidance; however, a person will remain sensitive.
Severe anaphylactic shock reactions may happen. However a life threatening reaction is rarely the first sign of a latex allergy. If a severe reaction occurs, get medical help immediately.
Latex is a tacky, milky sap that is produced by some types of shrubs, plants and trees including the commercial rubber tree (Havea Braziliensis). The latex sap is made up of tiny droplets that contain water and hydrocarbon polymer and have a coating comprised of proteins. The sap is used to make latex rubber, also known as natural rubber.
Various chemicals must be added to latex to give the natural rubber product the desired strength, stretch and durability properties. Starch may be used to keep rubber products from sticking to each other. It also makes it easier to put on latex gloves.
Research has identified a protein substance in natural latex as a major source of the allergy. The protein can be absorbed through the skin or the powder containing the protein can be inhaled. However, chemicals such as zinc diethyldithiocarbamate (which is added to the latex) and starch powder (found in new gloves) have also caused allergic reactions in sensitive people.
Latex allergy is an occupational health hazard for many people including:
Latex is also found in other products, such as:
This list is not inclusive.
In the US, OSHA estimates that 8 to 12% of health care workers are latex sensitive. There is evidence that some people who are allergic to certain foods (banana, avocado, kiwi, passion fruit, chestnuts), some pollen and grasses may also develop an allergic reaction to latex.
Latex allergy can be prevented by protecting workers from latex exposure. Employers should:
Persons allergic to latex rubber products should consult an allergist to find out if they are actually allergic to latex (natural) rubber or to chemicals that are in synthetic rubbers. They should also advise their physicians and dentists so that alternate products can be used.
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Although every effort is made to ensure the accuracy, currency and completeness of the information, CCOHS does not guarantee, warrant, represent or undertake that the information provided is correct, accurate or current. CCOHS is not liable for any loss, claim, or demand arising directly or indirectly from any use or reliance upon the information.