What allergies are high today in ct

If you’re already taking OTC allergy meds (and, you know, keeping your windows closed and washing your face and hair after coming inside), allergy shots, a.k.a. allergen immunotherapy, make your immune system less reactive to allergens (read: pollen), and for some people, they can even induce a cure, says Dr. Parikh.

“By giving little increasing doses of what you are allergic to, you train the immune system to slowly stop being as allergic,” she says. “This is the best way to address allergies, as it targets the underlying problem and builds your immunity to a specific allergen.”

The downside? Allergy shots are a bit of a time commitment.

You’ll need to get them once a week for six to eight months, then once a month for a minimum of two years, says Dr. Parikh. You need to be a little bit patient, too, because it can take about six months to start feeling better (so if you desire protection by March, you’ll probably own to start in September the year before). But a life without allergies? Sounds worth it to me.

Cassie ShortsleeveFreelance WriterCassie Shortsleeve is a skilled freelance author and editor with almost a decade of experience reporting on every things health, fitness, and travel.

Kristin CanningKristin Canning is the health editor at Women’s Health, where she assigns, edits and reports stories on emerging health research and technology, women’s health conditions, psychology, mental health, wellness entrepreneurs, and the intersection of health and culture for both print and digital.

US Pharm. 2012;37(5):HS-14-HS-16.

Intravenous radiocontrast, or IV dye, is used for numerous diverse diagnostic procedures to enhance the images in various radiologic studies.

Examples of studies include computed tomography (CT) scans, angiograms, and pyelograms. These diagnostic procedures are done on a daily basis in hospital interventional radiology and cardiology departments around the world. In general, they are used to enhance the visibility of blood vessels.1

There are two basic types of contrast media that are used for most radiologic studies: ionic high-osmolality contrast media and nonionic low-osmolality contrast media. The latter has become the preferred form of IV dye in recent years, given its better safety record, especially for women who are breastfeeding. However, it is far more expensive than high-osmolality contrast media.

Allergy reactions to IV dye are common, can range from mild to moderate, and can sometimes be life-threatening.1

It is believed that people who own an allergy to seafood (shellfish) may show an allergy to contrast media as well, due to the presence of iodine in both. We will briefly review the types, applications, and allergy profile of these products in this article.

Types of Radiocontrast Media

Both high-osmolar contrast media (ionic) and low-osmolar contrast media (nonionic or organic) agents contain iodine and are istered intravenously. Most intravascular contrast media are derivatives of tri-iodobenzoic acid. The iodine molecule is an effective x-ray absorber in the energy range where most clinical systems operate.

Iodinated contrast media are the most efficient products to enhance the visibility of vascular structures and organs during radiographic procedures. The ionic type creates more charged particles and causes a high osmolality in blood, which may cause a potentially life-threatening contrast media reaction in some individuals with medical conditions. The nonionic agents generate less dissociation and particles and decrease this risk, but are much more expensive.

The nonionic contrast media are much more widely used today. The iodine concentration of contrast media is sure by the number of iodine molecules in milligrams present in a milliliter of a solution (mg/mL).2

Concentration of any contrast media agent determines how radiopaque the agent will be. The higher the iodine concentration, the better the chance that more x-ray photons will be absorbed. Therefore, that specific contrast agent may be more radiopaque than a comparable low-iodine concentrated agent.

The osmolality of a solution is the measurement of the number of molecules and particles in a solution per kilogram of water.

In other words, osmolality can be described as a measurement of the number of molecules that can crowd out or displace water molecules in a kilogram of water. The radiographic significance of the osmolality worth of contrast media is that it is higher than the osmolality worth of blood plasma. Any solution that has an osmolality worth greater than blood plasma is said to be a hyperosmolar solution.

What allergies are high today in ct

Therefore, ionic and nonionic contrast media are hyperosmolar solutions when compared to blood plasma.

Since certain radiographic procedures, such as myelography, cannot use ionic contrast media, the discovery of nonionic contrast media in 1974 (e.g., metrizamide) revolutionized these procedures.2

How Can I Prevent an Allergic Reaction to Mold?

There is no cure for allergies. But you can reduce your allergy symptoms by avoiding contact with the mold spores. Several measures will help:

Reduce Your Exposure to Mold Spores Outside

  1. Limit your outdoor activities when mold counts are high.

    This will lessen the quantity of mold spores you inhale and your symptoms.

  2. Wear a dust mask when cutting grass, digging around plants, picking up leaves and disturbing other plant materials.

Reduce Your Exposure to Mold Spores Inside

  1. Lower your indoor humidity. No air cleaners will assist if excess moisture remains. If indoor humidity is above 50%, fungi will thrive.

    A hygrometer is a tool used to measure humidity. The goal is to hold humidity under 45%, but under 35% is better.

    If you own to use a humidifier, clean the fluid reservoir at least twice a week to prevent mold growth. Air conditioners and dehumidifiers can also be a source of mold.

  2. Use central air conditioning with a CERTIFIED asthma & allergy friendly® filter attachment. This can assist trap mold spores from your entire home. Freestanding air cleaners only filter air in a limited area.

    Avoid devices that treat air with heat, electrostatic ions or ozone.

  3. Prevent mold and mildew build up inside the home. Pay shut attention to mold in bathrooms, basements and laundry areas. Be aggressive about reducing dampness.

To Reduce Mold in Your Bathrooms:

  1. Scour sinks and tubs at least monthly. Fungi thrive on soap and other films that jacket tiles and grout.
  2. Use an exhaust fan or open a window in the bathroom during baths and showers.
  3. Remove bathroom carpeting from places where it can get wet.
  4. Quickly repair any plumbing leaks.

To Reduce Mold in Your Kitchen:

  1. Quickly repair any plumbing leaks.
  2. Clean trash pails frequently.
  3. Clean refrigerator door gaskets and drip pans.
  4. Use an exhaust fan when you are cooking or washing dishes.

To Reduce Mold in Your Laundry Area:

  1. Don’t leave wet, damp clothes sitting around.
  2. Remove clothes from washing machine promptly.
  3. If you own a front-loading washing machine, clean the rubber seal and inside of the door.

    Leave the door cracked open when the machine is not in use.

  4. Make certain your laundry area has excellent air circulation.

To Reduce Mold in Your Bedrooms:

  1. Check windows for condensation (water droplets or mist).
  2. Polyurethane and rubber foams seem especially prone to fungus invasion. Use plastic covers on bedding made from these foams.
  3. Throw away or recycle ancient books, newspapers, clothing or bedding.
  4. Improve air flow through your bedroom. If your closet is colder than the relax of your room, leave the closet doors open.

To Reduce Mold in Your Basement:

  1. Quickly repair any plumbing leaks.
  2. Promote ground water drainage away from a home.

    Remove leaves and dead vegetation near the foundation and in the rain gutters.

To Reduce Mold in Your Whole House:

  1. Increase air flow in your home. Open doors between rooms, move furniture away from walls and use fans if needed.
  2. Use an electric dehumidifier to remove moisture and hold humidity in your home under 45 percent. Drain the dehumidifier regularly and clean the condensation coils and collection bucket.
  3. Repair roof leaks and roof gutters. Clean out your gutters to remove leaves and debris.

    When gutters are full or damaged, it can cause leaking.

Contrast Media Applications

Examples of currently used ionic and nonionic contrast media are perflutren-protein type-A microspheres injection (Optison), iohexol injection (Omnipaque), and nonionic iodixanol injection (Visipaque).

Optison is used in patients with suboptimal echocardiograms to opacify the left ventricle and to improve the delineation of the left ventricular endocardial borders.

Omnipaque is used for angiocardiography; aortography including studies of the aortic root, aortic arch, ascending aorta, and abdominal aorta and its branches; contrast enhancement for CT scan of head and body imaging; IV digital subtraction angiography (DSA) of the head, neck, abdominal, renal, and peripheral vessels; peripheral arteriography; and excretory urography.

Nonionic or organically bound iodine contrast media such as Visipaque (270 mgI/mL) are used for DSA.

Visipaque Injection (320 mgI/mL) is used for angiocardiography, peripheral arteriography, visceral arteriography, and cerebral arteriography. Visipaque Injection (270 mgI/mL and 320 mgI/mL) is indicated for CT of the head and body (excretory urography). Visipaque Injection (270 mgI/mL) is also indicated for peripheral venography. Another example of the nonionics is Isovue-300 (iopamidol), which is used to assist diagnosecertain disorders of the heart, brain, blood vessels, and nervous system.1,3

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:

  1. Don’t wear your “outside” clothes to bed
  2. Take your shoes off outside
  3. 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. (2018, November 14). Retrieved from https://acaai.org/allergies/types/ragweed-allergy

Medical Review August 2019.

Mold Allergy

What Is a Mold Allergy?

If you own an allergy that occurs over several seasons, you may be allergic to the spores of molds or other fungi.

Molds live everywhere. Upsetting a mold source can send the spores into the air.

Mold and mildew are fungi. They are diverse from plants or animals in how they reproduce and grow. The “seeds,” called spores, travel through the air. Some spores spread in dry, windy weather. Others spread with the fog or dew when humidity is high.

Inhaling the spores causes allergic reactions in some people. Allergic symptoms from fungus spores are most common from July to early drop. But fungi grow in numerous places, both indoors and exterior, so allergic reactions can happen year round.

Although there are numerous types of molds, only a few dozen cause allergic reactions.

Numerous molds grow on rotting logs and fallen leaves, in compost piles and on grasses and grains. Unlike pollens, molds do not die with the first killing frost. Most outdoor molds become inactive during the winter. In the spring they grow on plants killed by the freezing. Indoors, fungi grow in damp areas. They can often be found in the bathroom, kitchen or basement.

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:

  1. Zucchini
  2. Cucumber
  3. Honeydew
  4. White potato
  5. Cantaloupe
  6. Watermelon
  7. Banana
  8. 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:

  1. Itchy or puffy eyes
  2. Stuffy or runny nose
  3. Sneezing
  4. Itchy eyes, nose and throat
  5. 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.

How Do Doctors Diagnose Mold Allergy?

To diagnose an allergy to mold or fungi, the doctor will take a finish medical history.

If they suspect a mold allergy, the doctor often will do skin tests or allergen specific IgE blood tests. Extracts of diverse types of fungi may be used to scratch or prick the skin. If there is no reaction, then you probably don’t own an allergy. The doctor uses the patient’s medical history, the skin testing results and the physical exam to diagnose a mold allergy.

Risk Factors

As mentioned above, people who own seafood allergy are not at risk if they need to use contrast media.

In addition, people with an allergy to topical iodine cleaners or iodides are also not at increased risk for reactions to contrast media. Patients who are at higher risk include those with past reactions to contrast media (up to 44%); those with asthma; those who own a history of heart and kidney and thyroid (both hypo- and hyperthyroidism)diseases; those taking beta-blockers or metformin; and females and the elderly (appear to be at higher risk for severe reactions).8,11

Note: Timely follow-up of serum creatinine levels in patients with diabetes who are receiving metformin therapy is highly significant, and monitoring is required by pharmacists.

Almost 4% of patients with diabetes mellitus and normal renal function may develop contrast material–associated neuropathy with nonionic contrast media. Roughly 8% of patients with diabetes receiving metformin, whose baseline serum creatinine levels are under 1.5 mg/dL, develop an increased risk of lactic acidosis requiring metformin therapy to be withheld for at least 48 hours after istration of IV contrast material. The FDA currently recommends metformin monitoring in patients who are undergoing radiologic procedures involving istration of IV contrast media.11



American College of Radiology (ACR) Manual on Contrast Media. 2010. Version 7.
2. Meth MJ, Maibach HI. Current understanding of contrast media reactions and implications for clinical management. Drug Saf. 2006;29:133-141.
3. Thomson K, Varma D. Safe use of radiographic contrast media. Australian Prescriber. 2010;33:19-22. www.australianprescriber.com/magazine/33/1/19/22/.
4. Ho LM, Rendon C. Nelson RC, DeLong DM.Determining contrast medium dose and rate on basis of lean body weight: does this strategy improve patient-to-patient uniformity of hepatic enhancement during multi–detector row CT?Radiology. 2007;243,431-437.

5. Boehm I. Seafood allergy and radiocontrast media: are physicians propagating a myth? Am J Med. 2008;121(8):e19.
6. Barrett BJ, Parfrey PS. Preventing nephropathy induced by contrast medium. N Engl J Med. 2006;354:379-385.
7. Tramer MR, von Elm E, Loubeyre P, Hauser C. Pharmacological prevention of serious anaphylactic reactions due to iodinated contrast media: systematic review. BMJ. 2006;333:675.
8. Canter LM. Anaphylactoid reactions to radiocontrast media. Allergy Asthma Proc. 2005;26:199-203.

9. Brockow K. Contrast media hypersensitivity: scope of the problem. Toxicology. 2005;209:189-192.
10. www.medscape.com/viewarticle/489319_5.

What allergies are high today in ct

11. Keller DM,Iodinated contrast media raises risk for thyroid dysfunction.Arch Intern Med. 2012;172:153-159.

To comment on this article, contact [email protected]

Read More On: ALLERGY

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.

Allergy Prevention and Treatment

As mentioned above, the purpose of using these contrast agents is for diagnosis, but love any medical procedure in any radiological study, the correct dose or volume of contrast media needs to be sure prior to a procedure. The entire volume or dose is dependent upon several factors: iodine concentration of the contrast media; type of injectable contrast media (ionic or nonionic); patient’s body weight, anatomical structures or regions; speed of the injection; and age or disease process that could increase the risk of an adverse reaction.

The treatment of an acute reaction to contrast media is no diverse from any other anaphylactic reaction. Treatment may include injectable epinephrine and antihistamines, as well as the use of IV fluids for low blood pressure and shock.7

Contrast media reactions can be prevented by a test dose for the intended contrast or the use of an alternative; the use of nonionic versus ionic media if applicable; and the use of certain medicines prior to the istration of contrast media such as prednisone 50 mg orally taken at 13, 7, and 1 hour prior to procedure, or diphenhydramine (Benadryl) 50 mg orally, IV or intramuscularly, 1 hour prior to receiving radiocontrast media.7

Radiocontrast Media Allergy Diagnosis

Skin testing and RAST (radioallergosorbent test) own not been helpful in the diagnosis of contrast media allergy.

Little “test” doses are also not helpful, with reports of severe, life-threatening reactions occurring even at such amounts. Severe reactions to larger doses of contrast media own been observed after a person tolerated a little dose of IV dye. Therefore, the diagnosis of contrast media allergy is made only after symptoms own occurred. Otherwise, it is only possible to determine that a person is at increased risk of a reaction to contrast media based on the risk factors outlined below.6


In most cases, shortly after infusion, iodinated contrast media cause a warming sensation throughout the body. In certain areas of the body this feeling is more pronounced.

What allergies are high today in ct

Patients receiving contrast media via IV typically experience a boiling feeling around the throat, and this boiling sensation gradually moves below to the pelvic area.

Reactions to IV dye are observed in 5% to 8% of patients who get them. Mild reactions include a feeling of warmth, nausea, and vomiting. Generally, these symptoms happen only for a short period of time and do not require treatment. Moderate reactions, including severe vomiting, hives, and swelling, happen in 1% of patients receiving contrast media and frequently require treatment. Severe, life-threatening reactions, including anaphylaxis, happen in 0.1% of people receiving contrast media, with an expected death rate of one person in every 75,000.

The most severe reactions, including death, own been reported to happen at similar rates with both types of contrast media.5

Reactions to contrast media are not a true allergy, but rather a pseudoallergy in nature, meaning that there is no allergic antibody present that causes the reaction.

What allergies are high today in ct

Rather, contrast media act to directly release histamine and other chemicals from mast cells. The iodine concentration has an effect on the severity of an adverse reaction. The higher the iodine concentration, the greater the risk of an adverse reaction.9

Iodinated contrast media are toxic to the kidneys and kidney functions. The serum creatinine of the patient receiving a dose should be monitored before the procedure. In addition, the estimated glomerular filtration rate (eGFR) should be no lower than 30 mL/min in patients receiving iodinated contrast, and discretion should be used in patients with eGFR less than 45 mL/min. Following injections with additional fluids is highly recommended.1

Numerous studies own shown that although iodine is common in contrast media, iodine is not the cause of allergic reactions.

Certain proteins in seafood, rather, are the cause of allergy in patients with seafood allergies. It is noted that true allergic effects are by definition immunoglobulin E–related, and studies own shown that contrast media cause no such reaction in vivo. Therefore, contrast media or the iodine is not likely to act as an allergen.5

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.

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:

  1. Groundsel bush
  2. Burweed marsh elder
  3. Rabbit brush
  4. Mugwort
  5. Sage
  6. Eupatorium

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 400 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.

Dosing and istration

It is reported that the calculation of contrast media dose and injection rate on the basis of lean body weight leads to increased patient-to-patient uniformity of hepatic parenchymal and vascular enhancement.

This is likely related to the greater perfusion of contrast media to solid organs, muscles, and vessels compared with the highly variable but poorly perfused adipose tissue. As an example, the volume and injection rate of contrast material istration based proportionately on a 70-kg man with 25% body fat or a 70-kg lady with 30% body fat is about 45 g iodine IV at 0.9 g/sec.4

The rate or speed of contrast media injections may increase the risk of an adverse reaction. Also, the viscosity or thickness of the contrast media can cause resistance to its flow. The viscosity is related to the concentration, the size of the molecules in a specific contrast agent, and the temperature of the contrast agent.

Contrast media with higher viscosity values should be injected at a slower rate. Heating the contrast media, generally to body temperature, reduces viscosity. Iodine concentration, viscosity, temperature of the contrast media, catheter inner diameter, catheter length, and the number of catheter holes are every factors that influence contrast media flow.1

What Are the Symptoms of a Mold Allergy?

The symptoms of mold allergy are extremely similar to the symptoms of other allergies, such as sneezing, itching, runny nose, congestion and dry, scaling skin.

  1. Outdoor molds may cause allergy symptoms in summer and drop (or year-round in some climates)
  2. Indoor molds may cause allergy symptoms year-round

Mold spores get into your nose and cause hay fever symptoms.

They also can reach the lungs and trigger asthma. A chemical released by allergy cells in the nose and or lungs causes the symptoms. Sometimes the reaction happens correct away. Sometimes a mold allergy can cause delayed symptoms, leading to nasal congestion or worsening asthma over time. Symptoms often get worse in a damp or moldy room love a basement. This may mean you own a mold allergy.

Rarely, some patients can own a more serious illness called allergic bronchopulmonary aspergillosis.

In this condition, there is both an allergic and an inflammatory response to the mold. Symptoms may include severe wheezing, coughing and shortness of breath, much love asthma.

Food fungi, love mushrooms, dried fruit, or foods containing yeast, vinegar or soy sauce, generally don’t cause allergy symptoms of the nose, eyes and lungs. It is more likely that reactions to food fungi are caused by the food’s direct effect on blood vessels. For example, fermented foods (like wine) may naturally contain a substance known as histamine.

What allergies are high today in ct

Histamine is also a chemical your allergy cells release during an allergic reaction. Foods that contain histamines can trigger allergy-like responses when you consume them.

What Are the Treatments for Mold Allergy?

In some cases, there may be ways to reduce or remove mold exposure. This may not always be possible and you may need medications.

  1. Avoid contact with mold. (See tips above)
  2. Take medications for nasal or other allergic symptoms. Antihistamines and nasal steroids are available over the counter without a prescription. If you own allergic asthma, talk to your doctor about which medicines may be best for you.

    You might also be a candidate for allergy shots. Allergy shots may assist reduce symptoms and medications. Study more about allergy treatments.

Medical Review October 2015.

A computerised tomography (CT) scan uses X-rays and a computer to create detailed images of the inside of the body.

CT scans are sometimes referred to as CAT scans or computed tomography scans.

They’re carried out in hospital by specially trained operators called radiographers, and can be done while you’re staying in hospital or during a short visit.

Okay, so when does allergy season 2020 start?

Well, it’s technically *always* allergy season due to year-round offenders such as dust mites, mold, and pet dander, says Purvi Parikh, MD, an allergist and immunologist with Allergy & Asthma Network. But some allergens–pollens, specifically—are seasonal.

Jewelyn Butron

Tree pollen, for example, pops up in the spring (generally in tardy March to April), grass pollen arrives in the tardy spring (around May), weed pollen is most prevalent in the summer (July to August), and ragweed pollen takes over from summer to drop (late August to the first frost), says Dr.


And even worse news: Climate change means allergy season begins earlier and lasts longer, adds Corinne Keet, MD, PhD, a professor and allergist at Johns Hopkins University School of Medicine.

To get super-specific, Pollen.com has a National Allergy Map that provides an up-to-date allergy forecast in diverse areas around the country and an Allergy Alert app that gives five-day forecasts with in-depth info on specific allergens, helping you decide if you should stay indoors that day.

Certain areas own also seen a particularly large increase in pollen during allergy season.

In 2019, the New York Times reported on the extreme blankets of pollen that hit North Carolina; Georgia and Chicago also faced especially aggressive allergy seasons too. In Alaska, temperatures are rising so quickly (as in numerous other far northern countries), that the pollen count and season duration are seeing unprecedented growth.

Before having a CT scan

Before having the scan, you may be given a special dye called a contrast to assist improve the quality of the images.

This may be swallowed in the form of a drink, passed into your bottom (enema), or injected into a blood vessel.

Tell the radiographer if you feel anxious or claustrophobic about having the scan.

They can give you advice to assist you feel calm and can arrange for you to own a sedative (medication to assist you relax) if necessary.

Before the scan starts, you may be asked to remove your clothing and put on a gown.

You’ll also be asked to remove anything metal, such as jewellery, as metal interferes with the scanning equipment.

When CT scans are used

CT scans can produce detailed images of numerous structures inside the body, including the internal organs, blood vessels and bones.

They can be used to:

  1. guide further tests or treatments – for example, CT scans can assist determine the location, size and shape of a tumour before having radiotherapy, or permit a doctor to take a needle biopsy (where a little tissue sample is removed using a needle) or drain an abscess
  2. diagnose conditions – including damage to bones, injuries to internal organs, problems with blood flow, stroke, and cancer
  3. monitor conditions – including checking the size of tumours during and after cancer treatment

CT scans wouldn’t normally be used to check for problems if you don’t own any symptoms (known as screening).

This is because the benefits of screening may not outweigh the risks, particularly if it leads to unnecessary testing and anxiety.

Preparing for a CT scan

Your appointment letter will mention anything you need to do to prepare for your scan.

You may be advised to avoid eating anything for several hours before your appointment to assist make certain clear images are taken.

You should contact the hospital after receiving your appointment letter if you own any allergies or kidney problems, or if you’re taking medication for diabetes, as special arrangements may need to be made.

You should also let the hospital know if you’re pregnant. CT scans aren’t generally recommended for pregnant women unless it’s an emergency, as there’s a little chance the X-rays could harm your baby.

It’s a excellent thought to wear loose, comfortable clothes as you may be capable to wear these during the scan.

Try to avoid wearing jewellery and clothes containing metal (such as zips), as these will need to be removed.

What does that mean for my allergy meds?

When should I start taking them?

There’s no point in waiting until you’re miserable to take allergy meds, especially if you desire to hold up your outdoor workouts.

In fact, allergists recommend you start taking meds a couple weeks before allergy season arrives, or, at the latest, take them the moment you start having symptoms, says Dr. Parikh. Taking them early can stop an immune system freak-out before it happens, lessening the severity of symptoms, he adds. Check out the National Allergy Map to figure out when to start taking meds depending on where you live.

As for which allergy meds to take, if you’re seriously stuffed, start with steroid nasal sprays such as Flonase or Rhinocort, which reduce inflammation-induced stuffiness, says Dr.

Keet. And if you’ve got itching, sneezing, and a runny nose, too, glance for non-sedating antihistamines such as Zyrtec, Xyzal, or Allegra, she adds. Just remember: While OTC allergy meds suppress symptoms, they don’t cure the problem, so they may be less effective if your allergies are worsening, notes Dr.

What allergies are high today in ct