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Environmental Control for Indoor Allergens

Environmental Control for Indoor Allergens

House dust contains a variety of allergens such as insect parts, animal dander, and dust mites. Furthermore, mold may also be present in homes. It is important to eliminate as much allergen as possible from the home in order to derive maximum benefit from your treatment.

House Dust Mite is probably the most important allergen in most homes. Controlling house dust mite exposure will decrease symptoms in allergic patients and may decrease the risk of developing dust mite allergy in patients not yet sensitized. Dust mites are tiny microscopic creatures that thrive in warm, moist climates. Upholstery (particularly the bed) is the ideal habitat for dust mites because they need the protection of the padding and a food supply (shed human skin) to survive. They cannot thrive on non-porous surfaces or in cool dry climates.

There are simple things you can do to minimize dust mite exposure:

  • You should concentrate on the bedroom (particularly the bed) because this is where you spend most of your time. In fact, when you are sleeping, you are breathing with your mouth and nose inches from a whole army of dust mites. The bedroom should be clutter free.
  • Dusting should be done frequently with a damp cloth.
  • The humidity in the bedroom should be kept below 50%. In Central Oklahoma this generally requires only air condition, but may require a de-humidifier. Humidifiers encourage dust mite and mold growth and should be avoided.
  • The mattress, box spring and pillow should be encased in dust mite proof encasements. All items on the bed should be washed in hot water (140 degrees) every one to two weeks. Stuffed animals should be removed from the bed.
  • Upholstered furniture and wall to wall carpet contain dust mites and should be avoided if possible, but these are not nearly as important as the bed.
  • Air filters, expensive vacuum cleaners, and duct cleaning help only minimally. When vacuuming, a HEPA filter or double bag should be used to minimize dust mites being stirred up and released into the air.

Cockroaches are now recognized as important indoor allergens. Other insects such as lady bugs, spiders, and crickets have recently been implicated. Keep the home clean and dry and fix any leaks or drips. It may be necessary to have an exterminator treat the home periodically.

Animal dander, generally from cats and dogs (but sometimes from gerbils, hamster, guinea pigs, mice, etc.) is a very important source of allergen in dust. Contrary to popular belief, animal hair is not the problem. Rather, it is a protein in the urine, saliva and dander of animal that provokes allergy. There are no “nonallergenic” furred pets. Some individual animals produce more allergen than others but there are no “safe” breeds.

  • The best thing you can do if you are allergic is to eliminate the pet.
  • Keeping the animal outside is only a partial solution because people who handle the animals outside will bring the allergen in on their clothes.
  • If you cannot eliminate the pet, try to keep the pet in non-upholstered areas and never let the pet in the bedroom. A HEPA filter in the bedroom may provide some protection.
  • Bathing the animals weekly may decrease the amount of allergen they produce.
  • After the animal has been removed, it can take as long as a year for allergen levels in the home to drop significantly, so a good thorough cleaning of the home is necessary after eliminating the animal.

Recently some information has come to light which suggests that if you are not already allergic it may actually be helpful to have cats or dogs in the home. However, if you are already pet allergic having the pets around will only worsen your allergic symptoms.

Indoor Mold can also cause significant allergic respiratory symptoms. Homes with high humidity and/or leaks have a high likelihood of having significant indoor molds. Once these issues have been fixed, it is generally easy to eliminate molds, but if you continue to have problems with water leaks or high humidity, you will have a hard time cleaning up your mold. Use a cleaning solution containing 5% bleach and a small amount of detergent to clean up moldy areas. Performing house dust control measures will help as well.

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Grass Pollen Allergy

If the smells of freshly cut lawns make you sneeze, you may have a grass pollen allergy. Grass pollen is a common cause of allergy. Every spring and summer, plants release tiny pollen grains to fertilize same species plants. Grass pollen can trigger allergic reactions.

If you are experiencing these symptoms, grass pollen may be the trigger:

  • Runny nose
  • Sneezing
  • Itchy nose, eyes, ears and mouth
  • Stuffy nose (nasal congestion)
  • Red and watery eyes
  • Swelling round the eyes

 Since grass pollen grains may not be visible to the eye, your body may react even to tiny amounts of pollen in the air. With Oklahoma’s strong winds, pollen is distributed across the state.

Also known as hay fever, allergists refer to pollen allergy as seasonal allergic rhinitis.

What grasses cause allergy symptoms?

Fortunately, only a few grasses cause allergic symptoms. Where you live also plays a factor in grass allergy.

The most common grasses causing allergies are:

  • Bermuda
  • Johnson
  • Kentucky
  • Orchard
  • Rye
  • Sweet Vernal
  • Timothy

Living in Oklahoma, grass can pollinate through most of the year. Tiny, light and dry – grass pollen grains can travel for hundreds of miles.

“The first step is to get tested and diagnosed,” said OAAC Allergist Dr. Bret Haymore. “Once your allergist knows what specific allergens causing your symptoms, then we can work with you to create a treatment plan.”

Options for treatment include over-the-counter medicines, liquids or nasal sprays and prescription pills (also known as antihistamines, decongestants and nasal steroids). These can help reduce or prevent grass allergy symptoms.

“Grass allergy pollen medicines work best when you start taking them before pollen season begins,” said Dr. Haymore. “This will allow the medicines to prevent your body from releasing histamine and other chemicals that cause your symptoms.”

Another option if those medicines are no longer helping, may be immunotherapy or allergy shots. There are two types of grass allergy immunotherapy – allergy shots and allergy tablets. 

“Immunotherapy is a long-term course of treatment that can reduce or even prevent the severity of allergic reactions,” he said. “Allergy shots usually take a one-to-three-year commitment and can modify the body’s immune response to allergens.”

Allergy shots or subcutaneous immunotherapy (SCIT) are given at the OAAC clinics. Patients are monitored for any type of reaction to the shot. Most common side effects include local reactions at the injection site – redness, itching, swelling, tenderness, and pain. Less common reactions may include generalized redness, hives, itching, swelling, wheezing and low blood pressure.

Allergy tablets or sublingual immunotherapy (SLIT) can be done at home. This therapy involves placing a tablet containing the allergen under the tongue for one to two minutes and then swallowing it. Treatment must begin before grass allergy season and continues throughout grass allergy season. Taking the daily tablets may reduce grass allergy symptoms. There can be some side effects, and some can be serious. Please discuss with SLIT therapy with your OAAC provider about treatment options.

The post Grass Pollen Allergy appeared first on Oklahoma Allergy and Asthma Clinic.

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