What cause seasonal allergies

How do scientists know how much pollen is in the air?

What cause seasonal allergies

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 24-hour period.

What cause seasonal allergies

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.

What cause seasonal allergies

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.


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 2017 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 2015 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]

Additional resources:

This article was updated on April 30, 2019, by Live Science Contributor Rachel Ross.

As the weather warms and pollen begins its dance across the sky, some people’s bodies hurl them into a storm of watery eyes, runny noses and sneezing fits.

But sometimes the spring and summer months also bring bouts of tiredness. Can people with allergies also blame this on seasonal allergens?

What cause seasonal allergies

The answer is yes; there are several ways that seasonal allergies can make us feel low on energy.

An allergy or allergic reaction is, by definition, a fight that the body puts up when it’s faced with a foreign invader, such as pollen, said Dr. Kara Wada, an allergist and immunologist at The Ohio State University Wexner Medical Middle. [Can You Study Anything While You Sleep?]

«The body expends a lot of energy in making every of the cells, proteins and every of the other substances» that build up during an allergic response, also known as inflammation, she said.

This energy expenditure wears out the body and «some of the same chemical signals … in addition to fighting off what it sees as an enemy, makes you feel unwell» and rundown, she said.

This effect in seasonal allergies is love a watered-down version of the extreme tiredness that can overtake people who eat something they’re allergic to.

Allergies can also indirectly cause you to feel tired by robbing you of sleep. «It’s not unusual to hear that people own poorer quality sleep from their allergies,» Wada told Live Science, especially «if their nose is so stuffed up they own to breathe from their mouth or [if] post-nasal drip wakes them up in the middle of the night.»

Why exactly do allergies make sleeping challenging?

In essence, the body fights what it deems as foreign substances in the body by sending its little molecular army to the site of the invasion, causing inflammation there. Inflammation or swelling of the lymphatic tissue behind the nose, called the adenoids, could lead to a person breathing with their mouth open, which, in turn, can disrupt sleep, said Dr. Gloria Riefkohl, a pediatrician at Nicklaus Children’s Hospital in Miami.

This disruption happens because when the adenoids get larger, they can cause obstruction in nasal passageways, which can reduce the quantity of oxygen we need to breathe comfortably, said Dr.

Priyanka Seshadri, a pediatric resident also at Nicklaus Children’s Hospital.

«Seasonal allergies can definitely also affect concentration,» she said. «Kids could be misdiagnosed with ADHD [attention-deficit/hyperactivity disorder] or a learning disability when sometimes it is just really bad allergies.»

«Especially if you’re not getting excellent quality sleep, we know that that can result in not as clear thinking, not as much focus,» Wada said.

What cause seasonal allergies

«That’s not going to lead to being your best self [while trying to work].»

Finally, people can become drowsy while trying to cure their allergies. The most common allergy-fighting medications are called antihistamines (histamines are a chemical the body releases during allergic reactions). But a common side effect of some of these medications, such as diphenhydramine (brand name Benadryl), is drowsiness, Riefkohl said.

Originally published on Live Science.

An allergy is a reaction the body has to a specific food or substance.

Allergies are extremely common. They’re thought to affect more than 1 in 4 people in the UK at some point in their lives.

They’re particularly common in children. Some allergies go away as a kid gets older, although many are lifelong.

Adults can develop allergies to things they were not previously allergic to.

Having an allergy can be a nuisance and affect your everyday activities, but most allergic reactions are mild and can be largely kept under control.

Severe reactions can occasionally happen, but these are uncommon.


Symptoms of an allergic reaction

Allergic reactions generally happen quickly within a few minutes of exposure to an allergen.

They can cause:

  1. a red, itchy rash
  2. wheezing and coughing
  3. a runny or blocked nose
  4. red, itchy, watery eyes
  5. sneezing
  6. worsening of asthma or eczema symptoms

Most allergic reactions are mild, but occasionally a severe reaction called anaphylaxis or anaphylactic shock can happen.

This is a medical emergency and needs urgent treatment.


Common allergies

Substances that cause allergic reactions are called allergens.

The more common allergens include:

  1. latex – used to make some gloves and condoms
  2. medicines – including ibuprofen, aspirin and certain antibiotics
  3. animal dander, tiny flakes of skin or hair
  4. mould – these can release little particles into the air that you can breathe in
  5. dust mites
  6. insect bites and stings
  7. food – particularly nuts, fruit, shellfish, eggs and cows’ milk
  8. grass and tree pollen – an allergy to these is known as hay fever (allergic rhinitis)
  9. household chemicals – including those in detergents and hair dyes

Most of these allergens are generally harmless to people who are not allergic to them.


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.


Symptoms

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.

What cause seasonal allergies

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.

What cause seasonal allergies

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.


Common allergens

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.

What cause seasonal allergies

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.


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