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Pharmacologic (Medicine) Treatment for Nasal Allergies

Pharmacologic (Medicine) Treatment for Nasal Allergies

Antihistamines which are prescribed for the treatment of allergies fall into two categories, first generation and second generation. The first generation antihistamines are the oldest ones and date back several decades. Their chemical makeup is such that it gets into brain tissue very easily and, therefore, cause the most side effects. Almost all first generation antihistamines are over-the-counter. Examples are Benadryl, Chlor-Trimeton, Tavist, Allerest, etc.

The more recent advance in antihistamines, the so-called second generation antihistamines, are made up so that they do not get into brain tissue so easily and, therefore, cause less drowsiness. Examples are Claritin, Clarinex, Allegra, Zyrtec, Xyzal, and even Astelin and Patanase which are unique in that they are the only nasal spray antihistamines.

Antihistamines can be combined with decongestants. Pseudoephedrine and Phenylephrine are examples of decongestants that can be combined with antihistamines. Their purpose is to alleviate nasal and sinus congestion which can be a significant part of allergic symptoms in many people. Allegra-D, Clarinex-D, Zyrtec-D and Claritin-D are examples.

Singulair (classified as anti-inflammatory) is another category of medication shown to be effective for both nasal allergies and asthma. If the leukotriene pathway of inflammation is involved in a person’s allergies, then Singulair can be highly effective.

Intranasal steroid sprays are probably the mainstay of treatment for nasal allergies. Examples include Nasonex, Nasacort AQ, Rhinocort AQ, Flonase, Veramyst, Nasarel, Beconase AQ, and Vancenase AQ, and the most recent Omnaris. These are corticosteroids and are true antiinflammatory medicines to combat allergic inflammation. They are universally considered the drug of choice for nasal allergies. They are topically active and, therefore, poorly absorbed, so there is very little risk of systemic steroid side effects from them.

Another category of medication is the anti-cholinergic Atrovent (ipratropium) which is basically a drying agent for people who have significant runny noses.

NasalCrom (Cromolyn Sodium) is an older medication which supposedly prevents histamine from coming out of the allergy cell. It is not a very effective treatment and can be purchased over-the-counter.

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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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