Ashburn Allergy PLLC

A medical clinic located in Ashburn, VA that specializes in allergic disorders. Dr. Jiun Yoon is a board-certified adult and pediatric allergist.


Finally, the sun is visible again!!

The rains have stopped for now and the forecast for the next week or so is for many sunny days. The sunshine combined with the previous weeks of rain is a perfect setup for our weeds and molds to become very active and release pollen and spores into the air. Those with Fall allergies are likely to be affected. Historically, the peak for weeds is 2nd week of September. Make sure to take your long-acting antihistamines for the itchy symptoms and the steroid-based nasal sprays for the stuffy nose symptoms. We can help to pinpoint which environmental trigger is causing symptoms and also help to fine-tune your medications and/or offer other options that may allow you to be medication free. Call (571) 246-6323 to set up your appointment.

Below graphs courtesy of Sue Kosisky and Mariko Marks at USACAEL

FDA Extends EpiPen Expiration to Tackle Shortage

The FDA has extended the expiration dates of certain lots of Epipen and it’s generic unbranded pens due to the shortage of Epipens.

However, there are other alternative brands of epinephrine pens available that are in abundant supply. Auvi-q and the generic for Adrenaclick are ready available and the Auvi-q pens can be obtained with $0 copay for most insurances. (571) 246-6323 EpiPens are still available in the U.S., but are in limited supply in certain areas due to factors such as supply disruptions and manufacturer issues, according to the FDA.

FDA approves the first generic version of the EpiPen

Another option hopefully available in the near future for our patients in need of epinephrine auto-injectors pens. The approval sets the stage for cheaper competition that may lower prices.

August is just around the corner and the new school year will be starting sooner than you think. Now is the time to beat the rush and to go see your friendly neighborhood allergist to get those school forms filled out and get new prescriptions for the epinephrine pens. Beat the back to school rush.

It's also a good time to come in to get evaluated for those seasonal allergies that you have been putting off and may have forgotten about. For those with Fall allergies, ragweed and weed season is also about to start in August. Call now at (571) 246-6323 for an appointment to be seen by a board-certified pediatric and adult allergist/immunologist. You can also visit us at

Busting Allergy Myths (w/Dr. Dave Stukus) Your allergy questions answered, LIVE!

Food Allergy Research & Education

Epinephrine pens are the only life saving medications that can effectively reverse a life threatening allergic reaction. They need to be readily available and everyone associated with the affected patient needs to be aware of the proper use of these vital medications.

A new study on how allergy patients carry and use epinephrine auto-injectors, published in the Annals of Allergy, Asthma & Immunology, found that fewer than half of survey respondents have an auto-injector with them at all times. Learn more about the study and its results on the FARE Blog

Red Meat Allergies Caused By Tick Bites Are On The Rise

Mammalian meat allergy caused by the bite of the Lone Star tick is a relatively new allergic condition but the cases seem to be rising. Not every tick bite will lead to this condition or the more common Lyme Disease, but it is one more reason to avoid ticks.
Typical food allergies are caused by allergic sensitization to a particular food protein. Symptoms usually are immediately after consumption of the offending food protein, without an arthropod intermediary.
Alpha-gal or red meat allergy is triggered by the tick bite with allergic antibodies formed to a sugar molecule found in the mammalian meat. The allergic symptoms after consumption of the red meat, typically do not appear for about six hours, which can further complicate the presentation. An allergist can order a special blood test that can help to confirm the diagnosis if the clinical history is consistent with a history of tick bites and delayed allergic reactions after eating red meat. Call (571) 246-6323 for an appointment. If you are bitten by a Lone Star tick, you could develop an unusual allergy to red meat. And as this tick's territory spreads beyond the Southeast, the allergy seems to be spreading with it.

[06/20/18]   The clinic will be closed on Wednesday, July 4th through Sunday, July 8th. We will open for normal hours starting Monday, July 9th!

The Spring tree allergy season is coming to a close and the grasses have already peaked. But ragweed and weed pollen season is right around the corner. The recent deluge of rain, that we have seen in the area, has kept the tree and grass pollen counts down. All the extra moisture in the ground makes the lawns bright and green, but it may also lead to a bad ragweed and weed season later this summer and into the Fall.

Summer is almost here. Schools in the area will be releasing students home for the summer soon. College kids may already be home. Now may be a good time to bring those kids in to get allergy tested if they haven't already been tested. And if they are a good candidate, starting allergy shots now may help them so that their symptoms are not so bad next Spring.

Board-certified and fellowship-trained allergists can also evaluate and treat food allergies, asthma, skin conditions, and drug/venom allergies in children and adults.

We honor the men and women who made the ultimate sacrifice and thank those that continue to serve in defense of the freedoms that we all enjoy!

On Memorial Day, we pause to remember service members who have made the ultimate sacrifice.

Ashburn Allergy, PLLC, Ashburn

Hoping to get the word out about us and that we are accepting new appointments for children and adults. Find us at or call (571) 246-6323. 1 neighbor recommends Ashburn Allergy, PLLC on Nextdoor.

Here is an updated graph from Sue Kosisky at USACAEL (Official pollen counter for the Metro DC area). I quick shout out to Sue and Mariko Marks for their selfless service. The National Allergy Bureau is made up of volunteers around the country like Sue and Mariko who collect the pollen and perform the tedious task of counting the pollen and spores to provide the pollen counts that you hear on the TV weather stations.

The graph shows nicely how late the tree pollen peaked and also how high it got this year. People affected by the tree pollen definitely felt the effects of this year's late and high tree pollen counts.


Look at the clouds of pollen released from this tree. Individual pollen grains are microscopic; but during the peak release times, the pollen aggregates to leave a visible film on everything it encounters. It also gets in your eyes, nose, and lungs causing the classic allergy symptoms. (571) 246-6323

Seasonal allergy suffers, consider this your trigger warning. Here's just how bad the pollen count has been in Millville, New Jersey. According to the Asthma Center, trees in the area were seeing pollen counts in “extreme” range, its highest designation.

We are in the process of renovating the office space in anticipation of our grand opening in April 2018

We are in the process of renovating the office space in anticipation of our grand opening in April 2018

The team

Happy Nurses Week To Two Awesome Nurses!!

As our patients can attest, these two hard-working young women are the driving force of our clinic. They set the standard for great nursing care by providing compassionate and effective patient care. They will greet you with a smile and make sure that your visit is comfortable and stress-free. We are fortunate and lucky to have such amazing nurses.

EpiPen shortage: What should you do?

There has been a lot of news coverage recently about the Epipen shortage. The shortage is specific to the Epipen brand and its generic which is made by the same company, Mylan.

It is NOT a shortage on the medication, epinephrine. There are other brands that are widely available, that provide the same level of protection.

Talk to your physician and specifically your allergist and we can find you an alternative if your Epipen is expiring soon. Call (571) 246-6323 or visit us at If you carry one, check the expiration date and plan ahead

As we wrote about earlier this week, the first week in May is turning out to be our peak tree pollen week for the year. Here is a graph courtesy of Sue Kosisky(USACAEL), showing the pollen counts compared to previous years. #pollenalert #nova #ashburnallergy

[04/30/18]   Metro DC area: Very High Pollen Alert this week.

It will be sunny and warm with a breeze! That is the perfect setup for the trees in the area to finally release their pollen in abundance. The oak trees should be very busy this week. Car washes should be very busy getting the yellow coating off the cars!

American Academy of Allergy, Asthma, and Immunology

Here is a good reference guide to all the medications available for allergies and asthma put out by one of our national allergy and asthma organizations. Table format with pictures and generic options.

The AAAAI has created a reference guide of FDA approved prescription medications that are used to treat allergies and asthma. You will be able to view each medication by the generic and brand name.

Traditionally the end of April marks the peak of the Spring tree pollen season in the Metro DC area. On average, the highest tree pollen counts are usually observed in the 3rd or 4th week of April. This year with the wacky weather, it looks like we are going to see the peak happen sometime in May. Unfortunately, for those with Spring allergies, the worst is yet to come.

Now may be a good time to come in to get tested and see what options are available. Call (571) 246-6323 for an appointment.

[04/21/18]   Pollen Alert!! Very high pollen expected this weekend with the temperatures in the 60’s the next couple of days with sunny clear skies!

A board-certified allergist is the most qualified doctor to help you determine if you truly have a food allergy. Call (571) 246-6323 to schedule an appointment or visit us at

A common misconception is that a positive blood test = food allergy. Learn more about the factors that allergists take into account before making a diagnosis of a clinical food allergy.

Know (and share!) the facts.

We are super excited to announce that we are officially open for patients as of Monday, April 9, 2018!!

We are in the process of renovating the office space in anticipation of our grand opening in April 2018

We are in the process of renovating the office space in anticipation of our grand opening in April 2018

Renovations are in full swing and anticipated to be completed in the next week or two. Our Grand Opening is currently planned for Monday, April 9th!! We will start taking appointments the first week of April for patients to be seen starting on the 9th!!

Patients of all ages are welcome and we accept most major commercial and government insurances.

Please call (571) 246-6323 for more information and to schedule an appointment to be seen!

We are in the process of renovating the office space in anticipation of our grand opening in April 2018

We are in the process of renovating the office space in anticipation of our grand opening in April 2018

We are in the process of renovating the office space in anticipation of our grand opening in April 2018

We are in the process of renovating the office space in anticipation of our grand opening in April 2018

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The park service has just announced their prediction for one of the earliest peak blooms on record for the cherry blossoms. That means that the Spring allergy season is likely to start earlier too for our tree pollen sufferers in the area. The typical pollen-releasing trees in the area will also take advantage of the mild and wet weather to gear up to release that bothersome pollen in abundance.

If you haven't already, you should be taking your daily intranasal corticosteroid sprays and if needed your oral antihistamines and ocular antihistamines in preparation. The intranasal corticosteroids are the most effective but take some time to become effective.

As for us, the construction crews are working as hard and as fast as they can to get the suite renovations completed in time for our grand opening in the first or second week of April.

Once we are open, come by to check out our new space. If you would like a full evaluation and discussion of treatment options, please call (571) 246-6323 or visit us at

JUST IN: The cherry blossoms along the Tidal Basin will be at their peak March 17 to March 20, the National Park Service said.

Ashburn Allergy, PLLC (@AshburnAllergy) | Twitter

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www.instagram/ashburnallergy The latest Tweets from Ashburn Allergy, PLLC (@AshburnAllergy). Located in Ashburn, VA, we specialize in allergic conditions. Dr. Jiun Yoon is a board-certified allergist and treats patients of all ages. Ashburn, VA

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20955 Professional Plaza Suite 300

Have you been sneezing recently? Or has your nose has been stuffy? It may not be a cold or upper respiratory infection. If may be the start of Spring allergy season.

The very warm weather and moisture recently have gotten our early pollinating tree species very happy. Sue Kosisky and Mariko Marks (official Metro DC area pollen counters) report that the tree pollen counts for the area are in the HIGH range. The usual culprits are at fault: cedar, cypress, juniper, elm, maple, box elder, alder, and birch trees.

It may be time to start taking those allergy medications. Long-acting oral antihistamines such as fexofenadine(Allegra), cetirizine(Zyrtec), loratadine(Claritin), or levocetirizine(Xyzal) will help with some of the itchy symptoms.

For control of the nasal congestion, post-nasal drip, and runny nose; you are going to need to start an intranasal corticosteroid spray such as fluticasone(Flonase), budesonide(Rhinocort), or mometasone(Nasonex), or triamcinolone(Nasacort). Remember it takes about 7-10 days of daily use of the nasal sprays to become fully effective. So don't give up early.

Your friendly neighborhood allergist can help to determine if you truly have allergies and also to determine which allergens are causing your symptoms (tree/grass/weed pollen, pet dander/hair, mold, dust mites, cockroach, or all of the above).

We can also provide education on avoidance techniques and for those with severe symptoms or want an alternative to pills and nasal sprays, we do offer aeroallergen immunotherapy or allergy shots to see if we can boost your immune system to reduce or eliminate your sensitivity to the allergens.

Allergist in Ashburn, VA - Arriving April 2018

We have set up a temporary website at while the new full-service website is being developed. Jiun Yoon, MD - Allergist in Ashburn, VA We evaluate and treat patients of all ages for allergies, asthma, and other allergic conditions.

[01/23/18]   We are still in the process of setting up the practice. The location is finalized: 20955 Professional Plaza Suite 300, Ashburn, VA 20147 at the intersection of Claiborne Pkwy and Ashburn Farm Pkwy. However, the suite is undergoing construction and renovations.

The website should be up within the next month at

We anticipate a start date in April 2018.

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Ashburn Allergy PLLC

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20955 Professional Plaza Ste 300
Ashburn, VA

Opening Hours

Monday 10:00 - 18:00
Tuesday 07:30 - 14:30
Wednesday 10:00 - 18:00
Thursday 10:00 - 18:00
Friday 07:30 - 14:30
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