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Respiratory Symptoms From Inhaled Substances

Respiratory Symptoms From Inhaled Substances

Allergens

An allergen is a substance which is capable of initiating an allergic reaction. The most important inhaled allergens are tiny invisible pollen grains, mold spores, house dust and animal danders.

Allergy-causing pollens come from plant flowers which at certain times of the year release large quantities of light buoyant pollen which can be carried for miles by the wind. These flowers are inconspicuous and often don’t really look like blossoms. They include trees which pollinate in spring, grasses in summer, and weeds in the fall. (See OAAC educational material handout Pollen Seasons) Ornamental flowers are generally not very important in allergy. They have large sticky pollen grains that are carried to other flowers by insects. They are not sufficiently abundant in the air to cause symptoms unless an allergic person is very close to them. However, some ornamental flowers are related to weeds. This is why some ragweed-allergic patients have symptoms when they are close to chrysanthemums, zinnias, asters, daisies, etc.

There are many types of molds in our environment. They have varying preferences for the types of places and conditions under which they grow into colonies. Some prefer to colonize indoors, some outdoors. The spores released by colonies are carried through the air to new places suitable for new colony formation. These spores are smaller than pollen grains but like pollens can cause allergic symptoms when they are inhaled.

The important constituents of house dust are the products of microscopic organisms found in most homes. House dust mites and molds thrive in warm moist conditions.

Like humans, fur-bearing animals continually grow new layers of skin. The indoor pet’s “dander” (tiny flakes of the outer layer of skin) falls off, disintegrates, and causes symptoms when inhaled. During early stages of allergy to a pet, patients are often unaware that the animal is contributing to their symptoms.

If a person is allergic to a pet, he/she should strictly avoid the animal. Outdoor pets are not of major concern. Pets that are confined to a limited part of the house (such as a tiled or wood-floored utility room and kitchen) are better then pets that contaminate the entire house. At the very least, pets should be kept out of the allergic person’s bedroom at all times. (See OAAC educational material handout Environmental Controls for Indoor Allergens.)

Irritants

An irritant is a substance which may trigger certain symptoms strictly because of its irritating effects. The symptoms mimic allergy, but in fact they are not really the result of an allergic reaction. Some individuals are extremely sensitive to these inhales substances (which incidentally bother the average person very little). The basis for this extreme membrane sensitivity is not well understood, but it is not allergy.

The most common offenders are smoke, cold air, wind, temperature changes, and weather fronts. Other provoking factors which bother some people in varying degrees include sharp pungent odors (paint, turpentine, aerosol sprays, perfumes, cleansers, cosmetics, chemical odors, exhaust smoke, insecticides, detergents and new fabric odors).

Respiratory infection is included in this category as is external wheezing in asthmatics.

Some substances are not only allergens or irritants but can be both. Examples include house dust, feed and grain dusts, and live Christmas trees. In any given patient allergens, irritants or a combination of both may be of major importance in the production of either asthma or nasal symptoms.

Occasionally patients who are sensitive to both irritants and allergens will have useful reduction in nasal and chest symptoms caused by irritants when their allergies are successfully treated. More commonly their susceptibility to irritants remains a separate problem and the treatment is by appropriate medication and avoidance. Irritant induced symptoms are more difficult to treat than those from allergens.

Recent News

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AAFA’s 2024 Allergy Capitals™ report names most challenging cities for living with allergies, OKC – Fifth; Tulsa – Sixth in the top Ten

Washington D.C., March 14, 2024 — The Asthma and Allergy Foundation of America (AAFA) released its 2024 Allergy Capitals™ report detailing the most challenging cities in the United States for living with allergies. The full report can be found at allergycapitals.com.

This year, Wichita, Kansas takes the top spot due to its higher-than-average tree and grass pollen, higher-than-average medicine use, and limited access to allergy specialists. The top 10 Allergy Capitals™ for 2024 are: 1. Wichita, KS; 2. Virginia Beach, VA; 3. Greenville, SC; 4. Dallas, TX; 5. Oklahoma City, OK; 6. Tulsa, OK; 7. Richmond, VA 8. Des Moines, IA; 9. Raleigh, NC, and 10. Fayetteville, AR.

This year’s report again calls attention to the urgency of the climate crisis. Due to climate change, growing seasons start earlier and last longer than they did just 30 years ago. Some parts of the United States now experience pollen (tree, grass, or weed) year-round. Warmer temperatures also trap heat in urban areas, increase air pollution, and stimulate pollen production.

“Climate change fuels a perfect storm of conditions that make allergy season worse for people with pollen allergy,” said AAFA President and CEO Kenneth Mendez. “Longer growing seasons mean more exposure to pollen allergy triggers. Additionally, pollen counts tend to rise with warmer temperatures. Now, we see both more days of exposure to pollen and higher daily pollen counts leading to more intense, longer-lasting symptoms.”

AAFA’s 2024 Allergy Capitals™ report provides insight into factors impacting seasonal allergies. The report ranks the 100 most populous cities in the contiguous United States by their:

  • Tree, grass, and weed pollen scores
  • Over-the-counter allergy medicine use
  • Availability of board-certified allergists/immunologists 

Experts say a range of treatment options are available for people dealing with seasonal allergies this spring.

“Over-the-counter medicines can help manage symptoms,” said allergist Dr. Neeta Ogden, spokesperson for AAFA. “Working with a specialist can help you develop the best treatment plan.”

While the symptoms of pollen allergy can be managed, they are a significant health concern. Seasonal allergies can even lead to hospitalization if they trigger an asthma episode.

“Our pollen season continues to begin earlier each year,” said Dr. Claire Atkinson, a board-certified allergist with the Oklahoma Allergy & Asthma Clinic (OAAC). “We’ve already had several allergy alert days this year and we’ve not even made it to the official start of Spring. We want to encourage people who are suffering to see their medical provider and consider making an appointment with an allergist.”

A board-certified allergist can diagnose allergies, and determine the specific triggers that cause them, through simple tests. The allergists at OAAC evaluate and manage patients of all ages. The main clinic is on the Oklahoma Health Center campus. For patient convenience, satellite offices are in Edmond, Norman and Yukon.

Visit the OAAC website at www.oklahomaallergy.com to view the addresses for all Oklahoma Allergy and Asthma Clinic locations. To make an initial appointment or to request more information, please call (405) 235-0040 or visit the website.

For information on preventing and treating allergies and asthma, visit aafa.org.

The post AAFA’s 2024 Allergy Capitals™ report names most challenging cities for living with allergies, OKC – Fifth; Tulsa – Sixth in the top Ten appeared first on Oklahoma Allergy and Asthma Clinic.

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