By Massoud Mahmoudi

Is your skin irritated by gloves or Band-Aids? These products and many others may contain latex and you may be allergic to them.

Natural rubber latex is a milky extract from a variety of tropical plants but primarily from the Brazilian tree Hevea brasiliensis. People who use products containing latex may develop hypersensitivity and become symptomatic upon exposure. Healthcare providers, housekeepers, cooks, food handlers and toy manufacturers are among those affected.

There are hundreds of products made of latex, including the backing on bathroom throw rugs or carpet, elastic underwear, pantyhose, diaphragms, contraceptive sponges, condoms, insulation materials, mouse pads for computers, pacifiers, disposable diapers, dishwashing gloves, plasters, toys, balls, swim goggles, sailing equipment, swim suits, lottery tickets (instant scratch off) and chewing gum.

How do you know if you have a latex allergy? You may experience symptoms such as hives and red, irritated skin after exposure to latex. Some latex-sensitized people may also react to foods such as banana, avocado, kiwi, chestnut and melon because of the similarity of latex proteins to the proteins in those fruits. Latex sensitivity can also be confirmed with a lab test.

Unfortunately, there is no treatment for latex allergy. The best strategy to control a latex allergy is prevention. Here are some tips:

• Look for latex-free alternatives.

• Read labels.

• Call the manufacturer if the item has no label.

• Limit your exposure.

• Ask your allergist to prescribe you an EpiPen. This is a self-injectable syringe containing epinephrine. In case of dangerous systemic reaction, you can inject the medication into your muscle.

• Carry Benadryl with you. The generic name is diphenhydramine. This antihistamine can take care of minor reactions such as itching or hives. In case of systemic reactions, you should use your EpiPen as well as Benadryl and then go to an emergency room.

• Wear an identification bracelet noting your latex allergy.

• If you need to have an operation, you should notify your physicians or the hospital about your latex allergy.

Dr. Massoud Mahmoudi is an assistant clinical professor at UC San Francisco’s Department of Medicine and is in private practice, with offices in Los Altos and Los Gatos. E-mail him at doctormahmoudi@yahoo.com.