What blooms in august that causes allergies
If you know exactly which allergens you react to (a visit to your allergist can narrow it down), you can hold track of when that pollen is at its highest levels, and plan your outdoor activities accordingly. Download a free app such as ’s Allergy Alert, which will give the forecast for specific pollens in your city.
According to the Asthma and Allergy Foundation of America, pollen counts are highest correct after dawn in rural areas; in urban environments, prime sniffle time is between 10 a.m. and 3 p.m. Since rain and freezing weather slow below the release of pollen, your best bet for an outdoor adventure is generally just after a rainfall.
Hay fever treatments
Dr. Sarita Patil, an allergist with Massachusetts General Hospital’s Allergy Associates in Boston, talked to Live Science about strategies for outdoor lovers with seasonal allergies.
Patil suggested figuring out exactly what type of pollen you’re allergic to, and then avoiding planning outdoor activities during peak pollinating times in the months when those plants are in bloom. Numerous grasses, for example, typically pollinate in tardy spring and early summer and release most of their spores in the afternoon and early evening.
Her other strategies: Be capable to identify the pollen perpetrator by sight; monitor pollen counts before scheduling outdoor time; go exterior at a time of day when the plants that make you go achoo are not pollinating; and wear protective gear love sunglasses, among other tips.
[7 Strategies for Outdoor Lovers with Seasonal Allergies]
Allergy sufferers may also select to combat symptoms with medication designed to shut below or trick the immune sensitivity in the body. Whether over-the-counter or prescription, most allergy pills work by releasing chemicals into the body that bind naturally to histamine — the protein that reacts to the allergen and causes an immune response — negating the protein’s effect.
Other allergy remedies attack the symptoms at the source. Nasal sprays contain athletic ingredients that decongest by soothing irritated blood vessels in the nose, while eye drops both moisturize and reduce inflammation.
Doctors may also prescribe allergy shots, Josephson said.
For kids, allergy medications are tricky.
A nationally representative poll of parents with kids between ages 6 and 12 found that 21% of parents said they had trouble figuring out the correct dose of allergy meds for their child; 15% of parents gave a kid an adult form of the allergy medicine, and 33% of these parents also gave their kid the adult dose of that medicine.
Doctors may also recommend allergy shots, a neti pot that can rinse the sinuses, or a Grossan Hydropulse — an irrigating system that cleans the nose of pollens, infection and environmental irritants, Josephson said.
Alternative and holistic options, along with acupuncture, may also assist people with hay fever, Josephson said.
People can also avoid pollen by keeping their windows closed in the spring, and by using air purifiers and air conditioners at home.
Probiotics may also be helpful in stopping those itchy eyes and runny noses. A review published in the journal International Forum of Allergy and Rhinology found that people who suffer from hay fever may benefit from using probiotics, or «good bacteria,» thought to promote a healthy gut. Although the jury is still out on whether probiotics are an effective treatment for seasonal allergies, the researchers noted that these gut bacteria could hold the body’s immune system from flaring up in response to allergens — something that could reduce allergy symptoms.
[5 Myths About Probiotics]
This article was updated on April 30, , by Live Science Contributor Rachel Ross.
Many people suffer from allergies in mid- to late-summer, but few know exactly what causes them.
Goldenrod, a prolific flowering plant with masses of golden flowers, is often blamed for the itchy eyes, runny nose, and other symptoms that numerous of us suffer from during summer allergy season.
However, for most of us, ragweed pollen is the true culprit. While goldenrod actually benefits butterflies, bees and other pollinators.
We record about this every couple of years. Here’s an article from on how to tell the difference between goldenrod and ragweed, and why ragweed is the large contributor to allergy season. (In short, goldenrod’s pollen is too large to drop far from the plant, but ragweed’s tiny, light pollen travels widely.) Still, goldenrod continues to get a bad rap.
Goldenrod has a reputation as an invasive plant, which can be true depending on the habitat and the circumstance.
It’s a common native species that provides a grand late-season resource for pollinators, but it can be fairly aggressive. So much so that it can crowd out other native prairie and savanna species to form a monoculture, creating a field of only goldenrod plants.
This is especially true when there’s a lack of management or an abundance of resources, including space or nutrients. However, with proper management, goldenrod can be an significant part of our natural areas, and at FMR we often include one or more goldenrod species in our prairie and savanna restorations.
While Canada goldenrod may be the most common and recognized species in Minnesota, we frequently include species love stiff goldenrod (Solidago ridiga [pictured below]) and ancient field goldenrod (Solidago nemoralis) in our grassland restorations.
Even our forest restorations often include a goldenrod species (zig-zag goldenrod; Solidago flexicaulis).
But those are just a few of the roughly 45 species of goldenrod in the state.
Monarch butterflies on stiff goldenrod (Solidago rigida) at Coldwater Spring.
So just remember that these yellow flowers you see across urban, suburban, rural and natural landscapes are grand plants for pollinators, and aren’t likely contributing to your allergies or your neighbors’.
If you’d love to make certain you’re not removing goldenrods when you mean to be getting rid of allergy-triggering ragweed, check out our article on the differences between these plants.
Learn more from our conservation blog
Ragweed is one of the primary causes of seasonal allergies in the United States.
This fact sheet provides general information about ragweed allergy. We hope that this material helps you better understand how to recognize ragweed allergy and know what to do about ragweed allergy if it affects you or someone in your family.
Please hold in mind that this information is not meant to take the put of medical advice from your own physician.
When five-year-old Travis started kindergarten in early Drop, he seemed to get a lot of colds and upper respiratory infections. His mom figured that since he hadn’t been in day care, his body was simply adjusting to the new germs he was exposed to by being with lots of other kids.
But when Travis started wheezing and coughing every the time, the pediatrician suggested an allergy might be the cause. Allergy testing confirmed that Travis had developed sensitivity to ragweed pollen, which appeared at high levels in his town every September. With proper medicines and simple avoidance measures, his health improved significantly.
What is ragweed?
Ragweeds are soft-stemmed weeds that grow in much of the United States. They are tough and hardy, capable to thrive in numerous places especially where soil disturbance occurs.
Seventeen species, or more, of ragweed grow in North America. Ragweed belongs to a larger family of plants called Compositae. Other plants of this family include:
• Burweed march elder
• Rabbit brush (bur ragweed)
• Mugworts, groundsel bush
• Goldenrods, marigolds, zinnias, sunflowers
Ragweed plants are most common in the east and midwest of the United States. Common ragweeds only live for one season, but each plant alone produces up to one billion pollen grains.
After midsummer, as nights start to get longer, the ragweed flowers mature and release their pollen. Warmth, lowered humidity, and athletic breezes after sunrise assist create the ideal environment for ragweed flowers to release pollen. The pollen then must travel by air to other ragweed plants to finish the fertilization process, resulting in seeds and more plants in the coming year(s).
Ragweed plants generally grow in rural areas as well as in urban waste places. Near the plants, pollen levels are highest shortly after dawn. The quantity of airborne pollen peaks in numerous urban areas between a.m.
and p.m., depending on the weather. Rain and/or low morning temperatures (below 50° Fahrenheit) can block or slow pollen release on that day.
Did you know . . . Ragweed pollen travels far! It has been measured in the air miles out to sea and two miles up in the atmosphere. However, most ragweed pollen grains drop out fairly near their sources.
Ragweed plants are easily overgrown by various turf grasses and other perennial plants that come up from established stems every year. Ragweed also grows where the soil is disturbed by streams of water, cultivation, or chemicals (such as winter salting of roads).
These weed plants are often found along roadsides and riverbanks, in vacant lots, and fields. Ragweed seeds can survive numerous decades in the soil, growing again when conditions become favorable.
What is ragweed allergy?
An allergy is the overreaction of the immune system to an allergen (usually a harmless substance). A person can come into contact with allergens by breathing; eating or drinking; touching; or having them injected into his or her body. Some people’s immune systems become changed so as to specifically react with these common substances.
This is called “sensitivity.” Subsequent exposure to the substance(s) can trigger an allergic reaction.
People can develop an allergy to the pollen of ragweed plants. Ragweed induced nasal symptoms are often referred to as ragweed “hay fever.” When people who are allergic to ragweed inhale the pollen (allergens) circulating in the air, they develop the common symptoms of hay fever.
Who gets ragweed allergy?
People with allergies to one type of plant pollen (or to dust, animals, and/or fungi) tend to develop allergies to other pollens as well.
Approximately percent of Americans suffer from ragweed allergy. Family members with nasal allergy, asthma, or eczema are often reported.
People with an allergy to ragweed also may own similar symptoms when they eat cantaloupe and bananas— generally mouth itching. Sunflower seeds, chamomile tea, or honey containing pollen from Compositae plant family members occasionally can cause severe reactions, including shock.
What are the symptoms of ragweed allergy?
The allergic response to every plant pollens producing seasonal symptoms is commonly known as hay fever.
The medical term for hay fever is “seasonal allergic rhinitis.” Symptoms of ragweed allergy include the following:
• Eye irritation, including itching, swelling, and redness
• Sneezing, often repeated
• Runny or stuffy nose
• Itchy throat and inside of ears
• Symptoms of asthma, including chronic cough, wheezing, or difficulty breathing
How is ragweed allergy diagnosed?
To identify an allergy to ragweed or one of its relatives, your physician will enquire you about your medical history, especially the timing of your symptoms, and examine you.
The main approach to confirm a suspected allergy is skin sensitivity testing.
With skin testing, your skin is gently scratched or pricked with a refined extract of ragweed pollen.
In sensitive people, the site will turn red, swollen, and itchy. Sometimes blood tests are used to see if an antibody to ragweed is present. Blood tests may be necessary if skin testing is impractical, but they take longer for processing, are more expensive to act out, and more subject to error.
What is the treatment for ragweed allergy?
There is no cure for ragweed allergy but numerous ways to reduce discomfort. The best way to manage an allergy to ragweed is to avoid or minimize your contact with ragweed pollen during ragweed season.
Keep in mind .
. . Ragweed pollen can be detected as early as mid to tardy July in certain areas. Most ragweed blooms in mid-August, with pollen levels peaking around early September. Ragweed season ends with the first hard frost, but levels are often low for weeks before.
Here are some ways to cut below on your exposure to the ragweed pollen.
• Track the pollen “count” for your area. The news media often report the pollen levels, especially when high.
Check your local newspaper or call the weather information telephone number for your area.
Where to discover the pollen count . . . The National Allergy BureauTM (NABTM) is the section of the American Academy of Allergy, Asthma, and Immunologys (AAAAI) Aeroallergen Network that is responsible for reporting current pollen levels to physicians and the public. ?p=default
• Emphasize activities in centrally air-conditioned spaces. Window units set on “recirculate” or “vent closed” also can assist. Various filter units and devices producing ultraviolet (UV) light and ions own unproven value.
• Keep the pollen off!
Keep windows closed so the pollen cannot easily enter your home or car. Use dryers instead of exterior line drying for laundry. Remove outer clothing before entering the home if you’ve been working or playing exterior during the pollen season. Take a shower after being exterior to remove pollen that collects on your hair and skin.
• Stay indoors. Airborne pollen tends to peak between the hours of a.m. and p.m. Attempt to take care of outdoor activity when the pollen levels are not at their peak.
• Get away from high pollen levels.
People living in the eastern and midwestern United States—where ragweed thrives—may get significant relief by going west to the Rocky Mountains and beyond during the peak ragweed season. Traveling abroad in tardy summer also can greatly reduce your exposure. Be certain to check the areas where you might travel to make certain ragweed is not a problem there as well (parts of central/eastern Europe own a tardy summer ragweed season.)
Should you make a permanent move? People with severe nasal allergy and asthma symptoms due to ragweed may consider living in a put with less ragweed.
Generally the west coast of the U.S. offers the lowest exposures. Although this approach often helps people feel better, these individuals are prone to develop allergies to plants in the new location. What’s a better solution? Develop a well thought out treatment plan to manage your allergies and asthma year-round.
• Take antihistamines. These medicines often work well to control symptoms of allergic rhinitis (such as hay fever), regardless of what causes those symptoms.
The drowsiness caused by products in the past is less of a problem with antihistamines now on the market. Anti-inflammatory nose sprays also can assist and generally own few side effects. Similar medicines, specifically for the eyes, can reduce ocular symptoms. Antihistamines are available without a prescription (over-the-counter) as well as in forms which do not cause drowsiness and are somewhat stronger with a prescription from your physician.
• Nasal steroid sprays are more effective than antihistamines.
They work best if started before or at the beginning of the season and if they are used everyday.
• Use quick relief or endless acting medicines for asthma symptoms. Ragweed pollen also may trigger various symptoms of asthma, such as cough, wheezing, tightness in the chest or difficulty breathing. Your physician can prescribe medicines that provide immediate relief as well as for long-term control.
• Consider getting allergy shots. Also known as immunotherapy, this form of treatment can reduce your allergic response to specific allergens.
In order for allergy shots to work, the allergens must be carefully identified with allergy testing. Allergy shots generally are taken over the course of several years, and it can take several months, or even one to two years, to see the full benefit. With proper materials and dosage, you may see major improvements in your symptoms.
Who should treat ragweed allergy?
Many patients are treated successfully for allergies or related asthma by their pediatrician, internist, or family physician. However, if your allergy or asthma symptoms are not under control within months, or if you own severe persistent allergy or asthma symptoms, or asthma or allergy episodes that need emergency treatment, it may be time to see a specialist.
Allergists/Immunologists or pulmonologists (who specialize in the treatment of lung diseases) are specialists who treat allergies and asthma. Practitioners who own completed training in those specialties are generally called board-certified or board- eligible.
Does health insurance cover treatment for ragweed allergy?
Most health insurance plans provide some level of coverage for allergy or asthma patients. Check with your insurance carrier for details. Some things you may desire to discover out might include:
• Do you need a referral to an allergy care specialist from your internist, family physician, or pediatrician?
• Does the insurance carrier offer any patient education or specialized services related to allergies, nasal allergy in general or asthma?
• What coverage is offered for pre-existing conditions?
• What medicines are not covered by your plan?
(There can sometimes be a delay in approving newly released medicines. Your physician may know about them, but your insurance may not cover them yet.)
• Are allergy shots (immunotherapy) covered under your plan?
The information provided in this fact sheet should not be a substitute for seeking responsible, professional medical care.
Reprinted with permission from “Asthma and Allergy Answers,” the patient education library developed by the Asthma and Allergy Foundation of America.
Ragweed Pollen Allergy
In the tardy summer, about 23 million Americans own symptoms from an allergy to ragweed pollen.1 The symptoms can make life miserable for those with allergies.
This allergy can also cause asthma symptoms for people with allergic asthma.
You may feel uncomfortable when ragweed plants release pollen into the air. Your symptoms may continue until the first frost kills the plant. Depending on your location, ragweed season may final six to 10 weeks. In most areas in the U.S., it peaks in mid-September.
How Is It Diagnosed?
If you ponder you are allergic to ragweed pollen, see a board-certified allergist. They will enquire you about your medical history, do a physical exam and allergy testing. They may do a skin prick test to confirm your allergy.
For prick/scratch testing, the doctor or nurse places a little drop containing ragweed pollen on your skin.
They will then lightly prick or scratch your skin with a needle through the drop. If you are sensitive to ragweed, you will develop redness, swelling and itching at the test site within 15 minutes. Sometimes your doctor may take a blood test to see if you own the antibody to ragweed.
Who Gets a Ragweed Allergy?
Seventy-five percent of people who are allergic to pollen are also allergic to ragweed. If you own allergies to one type of pollen, you tend to develop allergies to other types of pollen as well.
If you own a ragweed allergy, you may also get symptoms when you eat these foods:
- White potato
- Sunflower seeds
This is called oral allergy syndrome (OAS).
OAS occurs because your immune system confuses ragweed pollen with certain foods. Common OAS symptoms include itchy mouth, throat, tongue or face.
What Are the Symptoms?
Rhinitis symptoms often include:
- Itchy or puffy eyes
- Itchy eyes, nose and throat
- Stuffy or runny nose
- Mucus in the throat (postnasal drip)
If you own severe allergies, ragweed might trigger asthma symptoms, chronic sinusitis, headaches and congestion that can interfere with sleep.
What Is a Ragweed Pollen Allergy?
The occupation of your immune system is to discover foreign substances, love viruses and bacteria, and get rid of them.
This response normally protects us from harmful diseases. People with allergies own immune systems that react when they come in contact with allergens. When you are allergic to ragweed pollen and inhale it from the air, rhinitis (hay fever) symptoms show up.
Seventeen types of ragweed grow in North America. Ragweed also belongs to a larger family of plants that can spread pollen by wind. These plants can also cause symptoms.
Members of this plant family include:
- Groundsel bush
- Rabbit brush
- Burweed marsh elder
Some family members spread their pollen by insects instead of by wind.
They cause fewer allergic reactions.
But sniffing these plants can cause symptoms.
What Is Ragweed?
Ragweed is a weed that grows throughout the United States, especially in the Eastern and Midwestern states. Each plant lives only one season. But that one plant can produce up to 1 billion pollen grains.
When mid-August nights grow longer, ragweed flowers mature and release pollen. Warm weather, humidity and breezes after sunrise assist release the pollen. The pollen then travels through the air to another plant to fertilize the seed so a new plant can grow next year.
Ragweed generally grows in rural areas. Near the plants, the pollen counts are highest correct after dawn.
The quantity of pollen peaks in numerous urban areas between 10 a.m. and 3 p.m., depending on the weather. Rain and morning temperatures under 50 degrees Fahrenheit slow below the release of pollen.
Ragweed pollen can travel far. It has been found in the air miles out to sea and two miles up in the atmosphere. But most falls shut to its source.
Turf grasses and other perennial plants easily overgrow ragweed. But where streams of water, farming or chemicals upset the soil – love salting roads in the winter – ragweed will grow. It is often found along roadsides, riverbanks, in vacant lots and fields.
Dormant seeds that live in the soil for decades may grow when the conditions are right.
What Can I Do About It?
There is no cure for a ragweed pollen allergy. But there are ways to treat and manage it.
Track the pollen count for your area. The news media often reports the count for your area, especially when pollen is high. You also can get your area’s pollen counts from the National Allergy Bureau.
Stay indoors in central air conditioning when the pollen count is high. Get a CERTIFIED asthma & allergy friendly® air filter for your air conditioner.
If you do spend time exterior, attempt to go out before 10 a.m. and after 3 p.m. Ragweed pollen peaks in the middle of the day.
Prevent pollen from being tracked into your home. If you spend a lot of time exterior during peak pollen time:
- Don’t wear your “outside” clothes to bed
- Take your shoes off outside
- Take a shower and shampoo your hair at night
You might even consider moving to get away from ragweed. This will often assist you feel better for a short time.
But you can develop allergies to plants in your new location in a few years. And ragweed is found in every state except Alaska. A well-thought out treatment plan is a better way to live with your allergies.
Take anti-inflammatory or antihistamine medicines, and start treatment in the summer. Numerous over-the-counter medicines work well to control pollen allergy symptoms. They can also assist eye, nose and asthma symptoms. Numerous newer antihistamines don’t cause as much drowsiness as older ones.
Anti-inflammatory and antihistamine nose sprays also assist and own few side effects.
You can also discover eye drops for eye symptoms. Leukotriene inhibitors can assist by blocking chemicals your body releases when you own an allergic reaction.
For long-term relief, see an allergist about immunotherapy. This type of treatment can reduce the allergic response to specific allergens. There are two types: allergy shots and sublingual immunotherapy (SLIT).
Allergy shots involve giving injections of allergens in an increasing dose over time. They relieve symptoms for most people and can final for years to decades.
With SLIT, you take a little dose of an allergen under your tongue.
You also gradually become more sensitive.
If you own allergic asthma, your Asthma Action Plan may include some of these allergy treatments to assist you hold your asthma under control.
With the correct treatment plan, you should see major improvements in your symptoms.
1. Ragweed Allergy. (, November 14). Retrieved from
Medical Review August
Pulling on your coziest sweater and strolling through the park sounds love the perfectly way to spend a brisk autumn day — but when that scenario also involves a runny nose, itchy eyes, and a nagging cough, it’s not fairly as enjoyment.
Though numerous people ponder of spring, with its blossoming trees and flowers, as the worst season for allergies, they can get just as bad or even worse for some people when the weather cools, says Edith Schussler, M.D., a pediatric allergist at Weill Cornell Medicine in New York.
The biggest culprit for drop allergies is ragweed — up to 20% of Americans are allergic to the weed that blooms every over the United States. And it’s a powerful allergen: In fact, just one ragweed plant can produce up to 1 billion grains of pollen during its single-season lifespan.
In the past, the high season for ragweed allergies lasted from tardy August through September, but Dr. Schussler points out that that due to changes in weather patterns, the season has gotten longer and more brutal for allergy sufferers.
«We are having these longer, warmer falls, so the pollen sticks around much later in the season, from early August through October,» she explains. «With every that pollen going out, more ragweed is being seeded and growing, so it’s a vicious cycle.» You don’t just discover ragweed in bucolic country settings, either: «There is a lot of ragweed in cities as well, because the carbon dioxide from cars helps it grow,» says Dr.
In addition to ragweed, drop is prime season for indoor and outdoor molds. The fungus can collect up in piles of moist leaves — the extremely ones that kids love to jump in and adults need to rake up every weekend. But you can still enjoy the most beautiful season of the year without wrapping yourself up in a Hazmat suit or hiding in your basement until the first snowfall.
How do scientists know how much pollen is in the air? They set a trap. The trap — generally a glass plate or rod coated with adhesive — is analyzed every few hours, and the number of particles collected is then averaged to reflect the particles that would pass through the area in any hour period. That measurement is converted to pollen per cubic meter. Mold counts work much the same way.
A pollen count is an imprecise measurement, scientists confess, and an arduous one — at the analysis stage, pollen grains are counted one by one under a microscope.
It is also highly time-consuming to discern between types of pollen, so they are generally bundled into one variable. Given the imprecise nature of the measurement, entire daily pollen counts are often reported simply as low, moderate or high.
The American Academy of Allergy, Asthma & Immunology provides up-to-date pollen counts for U.S. states.
Avoid drop leaves as much as you can.
The best strategy is to avoid raking leaves or mowing the lawn until the drop allergy season is over. But if you’re the family member responsible for yard work, take precautions love wearing goggles and a face mask, suggests Dr.
Tests & diagnosis
A physician will consider patient history and act out a thorough physical examination if a person reports having hay-fever-like symptoms. If necessary, the physician will do an allergy test. According to the Mayo Clinic, people can get a skin-prick test, in which doctors prick the skin on a person’s arm or upper back with diverse substances to see if any cause an allergic reaction, such as a raised bump called a hive.
[7 Strange Signs You’re Having an Allergic Reaction]
Blood tests for allergies are also available. This test rates the immune system’s response to a specific allergen by measuring the quantity of allergy-causing antibodies in the bloodstream, according to the Mayo Clinic.
The most common allergen is pollen, a powder released by trees, grasses and weeds that fertilize the seeds of neighboring plants. As plants rely on the wind to do the work for them, the pollination season sees billions of microscopic particles fill the air, and some of them finish up in people’s noses and mouths.
Spring bloomers include ash, birch, cedar, elm and maple trees, plus numerous species of grass.
Weeds pollinate in the tardy summer and drop, with ragweed being the most volatile.
The pollen that sits on brightly colored flowers is rarely responsible for hay fever because it is heavier and falls to the ground rather than becoming airborne. Bees and other insects carry flower pollen from one flower to the next without ever bothering human noses.
Mold allergies are diverse. Mold is a spore that grows on rotting logs, dead leaves and grasses.
While dry-weather mold species exist, numerous types of mold thrive in moist, rainy conditions, and release their spores overnight. During both the spring and drop allergy seasons, pollen is released mainly in the morning hours and travels best on dry, warm and breezy days.
The symptoms of allergic rhinitis may at first feel love those of a freezing. But unlike a freezing that may incubate before causing discomfort, symptoms of allergies generally appear almost as soon as a person encounters an allergen, such as pollen or mold.
Symptoms include itchy eyes, ears, nose or throat, sneezing, irritability, nasal congestion and hoarseness.
People may also experience cough, postnasal drip, sinus pressure or headaches, decreased sense of smell, snoring, sleep apnea, fatigue and asthma, Josephson said. [Oral Allergy Syndrome: 6 Ways to Avoid an Itchy, Tingling Mouth]
Many of these symptoms are the immune system’s overreaction as it attempts to protect the vital and sensitive respiratory system from exterior invaders. The antibodies produced by the body hold the foreign invaders out, but also cause the symptoms characteristic of allergic responses.
People can develop hay fever at any age, but most people are diagnosed with the disorder in childhood or early adulthood, according to the Mayo Clinic.
Symptoms typically become less severe as people age.
Often, children may first experience food allergies and eczema, or itchy skin, before developing hay fever, Josephson said. «This then worsens over the years, and patients then develop allergies to indoor allergens love dust and animals, or seasonal rhinitis, love ragweed, grass pollen, molds and tree pollen.»
Hay fever can also lead to other medical conditions. People who are allergic to weeds are more likely to get other allergies and develop asthma as they age, Josephson said. But those who get immunotherapy, such as allergy shots that assist people’s bodies get used to allergens, are less likely to develop asthma, he said.