Mihail Fortomas asked:


Allergic rhinitis, more commonly known as “hay fever,” happens when you breathe in something you are allergic to. The inside of your nose becomes inflamed or swollen.

When this happens, the body’s immune system overreacts to specific particles such as plant pollens, molds, dust mites, animal hair, industrial chemicals, tobacco smoke, foods, medicines, and even insect venom.

Allergic rhinitis affects 40 million people in the United States and is an extremely common condition, affecting approximately 20% of the population. While allergic rhinitis is not a life-threatening condition, complications can occur and the condition can impair one’s quality of life leading to a number of indirect costs. Recently, the total direct and indirect cost of allergic rhinitis was estimated at around $5 billion annually.

What are the symptoms of allergic rhinitis?

Signs of allergic rhinitis are similar to signs of a common cold. But, unlike symptoms for the common cold, allergic rhinitis can last for more than 8-10 days. Symptoms include: -stuffy or runny nose -sneezing -itchy or watery nose -itchy or watery eyes -coughing (caused by clear mucus running down the back of the throat) -feeling of a ‘permanent cold’ that never goes away -headaches and earache -constant sore throats and postnasal drip -sleep disturbances and snoring -loss of taste and smell -poor concentration

Children who have allergic rhinitis might have dark circles under their eyes known as Allergic shiners” (related to nasal congestion). They may also use either the palm or the back of their hand to push their nose up as they try to stop the itching (called the “allergic salute”).

What causes allergic rhinitis?

Like our previous discussion, allergic rhinitis is caused by substances that trigger allergies, called allergens. These allergens are found both indoors and outdoors. When allergic rhinitis is caused by common outdoor allergens, like mold or trees, grass and weed pollens, it is often referred to as seasonal allergies, or “hay fever.”

Allergic rhinitis may also be triggered by allergens found in your house like animal dander (tiny skin flakes and saliva), indoor mold, and cockroach or house dust mite droppings.

If you experience symptoms during spring, you may be allergic to tree pollens which we will discuss in detail further on.

To know for certain what causes your symptoms, an allergist or immunologist can perform skin tests to determine what you are allergic to.

What are my choices or treatment?

Over-the-counter antihistamines and nose sprays can help at first, but they can have a number of unpleasant side effects. These antihistamines can make you feel tired and drowsy while nasal sprays can make your stuffiness worse.

Doctor-prescribed nose sprays and antihistamines are different types of medication and are very helpful for controlling long-term symptoms. Some are safe for young children and all are safe for adults.

Consultation with an allergist will determine the medicine and treatment that is right for you.

Can I do anything to avoid getting allergic rhinitis? As prevention is worth a pound of cure, there are some things you can do in your house that might make your symptoms better if not avoid them altogether:

For those who have rhinitis, it may be best not to have pets. But if it cannot be helped, make sure to wash your pet (especially if hairy and furry) once a week. Keeping them out of the bedroom and off the furniture will help as well.

Put pillows and mattresses in sealed plastic covers that keep out dust mites, and wash sheets in hot water weekly. Washing machines at the local Laundromat will have hot enough water to kill the dust mites.

Keep windows closed. If possible, get an air conditioner and run a dehumidifier, so that there will not be so many pollens and molds getting in the house.

What are allergy shots?

For some patients, allergy shots, also known as immunotherapy, are very helpful, and safe. Allergy shots help how your body handles allergens by injecting into your body small amounts of the substances causing your allergy. Over the period of the therapy, your body will learn to accept the allergen without overreacting to it (which is the reason for the allergic reactions).

Your doctor may talk to you about allergy shots if your allergy symptoms are very bad and if they happen for most of the year. You can also consider this if you are constantly around the allergens (such as pollens and dust mites) and if in spite medicines, you are still symptomatic.

Cindy Heller asked:

Rhinitis during pregnancy can be due to allergic rhinitis, sinusitis, or non-allergic rhinitis. If the woman has had allergic rhinitis prior to pregnancy, this could worsen, stay the same, or even improve. This change in symptoms may be dependent upon many factors, including the presence of seasonal allergens and increase in pregnancy hormones.

Non-allergic rhinitis in pregnancy may also be due to an increase in pregnancy hormones, leading to nasal congestion, runny nose and post nasal drip. This is called “rhinitis of pregnancy”. The symptoms may mimic allergies, but since they are non-allergic in nature, do not respond to anti-histamines.

The pregnant woman with rhinitis may be concerned about the safety of medications during pregnancy, and therefore avoid taking medications.

If avoidance of allergic triggers is not possible or successful, medications may be needed to control symptoms.

Diagnosis of Allergic Rhinitis During Pregnancy

Allergy testing includes skin testing or blood tests, called a RAST. In general, allergy skin testing is not done during pregnancy, given the small chance of anaphylaxis which may occur. Anaphylaxis during pregnancy, if severe, could result in a decrease in blood and oxygen to the uterus, possibly harming the fetus. Therefore, allergy testing is usually deferred during pregnancy, although a RAST would be a safe alternative if the results are needed during pregnancy.

Safety of Allergy Medications During Pregnancy

According to the Food and Drug Administration (FDA), no drugs are considered completely safe in pregnancy. This is because no pregnant woman would want to sign up for a medication safety study while she is pregnant. Therefore, the FDA has assigned risk categories to medications based on use in pregnancy.

Pregnancy category “A” medications are medications in which there are good studies in pregnant women showing the safety of the medication to the baby in the first trimester. There are very few medications in this category, and no asthma medications.

Category “B” medications show good safety studies in pregnant animals but there are no human studies available.

Pregnancy category “C” medications may result in adverse effects on the fetus when studied in pregnant animals, but the benefits of these drugs may out weight the potential risks in humans.

Category “D” medications show clear risk to the fetus, but there may be instances in which the benefits outweigh the risks in humans. And finally, category “X” medications show clear evidence of birth defects in animals and/or human studies and should not be used in pregnancy.

Before any medication is taken during pregnancy, the doctor and patient must have a risk/benefit discussion. This means that the benefits of the medication should be weighed against the risks – and the medication should only be taken if the benefits outweigh the risks.

Treatment of Rhinitis During Pregnancy

Nasal saline. Rhinitis of pregnancy tends not to respond to anti-histamines or nasal sprays. This condition seems to respond temporarily to nasal saline (salt water), which is safe to use during pregnancy (it is not actually a drug). Nasal saline is available over the counter, is inexpensive, and can be used as often as needed. Generally 3 to 6 sprays are placed in each nostril, leaving the saline in the nose for up to 30 seconds, and then blowing the nose.

Anti-histamines. Older anti-histamines, such as chlorpheniramine and tripelennamine, are the preferred agents to treat allergic rhinitis during pregnancy, and are both category B medications. Newer anti-histamines such as over-the-counter loratadine (Claritin/Alavert and generic forms) and prescription cetirizine (Zyrtec) are also pregnancy category B medications.

Decongestants. Pseudoephedrine (Sudafed, many generic forms) is the preferred oral decongestant to treat allergic and non-allergic rhinitis during pregnancy, although should be avoided during the entire first trimester, as it has been associated with infant gastroschisis. This medication is pregnancy category C.

Medicated nasal sprays. Cromolyn nasal spray (NasalCrom, generics) is helpful in treating allergic rhinitis if it is used before exposure to an allergen and prior to the onset of symptoms. This medication is pregnancy category B and is available over the counter. If this medication is not helpful, one nasal steroid, budesonide (Rhinocort Aqua), recently received a pregnancy category B rating (all others are category C), and therefore would be the nasal steroid of choice during pregnancy.

Immunotherapy. Allergy shots can be continued during pregnancy, but it is not recommended to start this treatment while pregnant. Typically the dose of the allergy shots is not increased, and many allergists will cut the dose of the allergy shot by 50 percent during pregnancy. Some allergists feel that allergy shots should be stopped during pregnancy, given the risk of anaphylaxis and possible danger to the fetus as a result. Other than anaphylaxis, there is no data showing that the allergy shots themselves are actually harmful to the fetus.

Raily Arena asked:


Hay fever, also known as Allergic Rhinitis, is a common form of allergy that people have been suffering from for many decades.  Health experts estimate that about 50 million people chronically suffer from this type of nasal allergy.  If you frequently experience symptoms such as nasal congestion, sneezing, runny nose, postnasal drip, red, swollen eyes and frequent colds, you could have Allergic Rhinitis.  Oftentimes, it takes only small particles such as pollen to affect the human body in many ways.  Some of these effects include:

- Throat itchiness that may be intermittent or continuous

- Laryngitis or hoarseness due to pollen affecting the larynx

- RAD or Reactive Airway Disease, a prolonged respiratory irritation characterized by difficulty breathing, chest tightness, wheezing and coughing

- Asthma attacks – often times, your doctor will diagnose RAD before he diagnoses asthma

- Postnasal drainage, which could lead to sore throat because of fluids flowing into and irritating the throat

- Nasal salute, particularly in young children; characterized by a red crease across the nose due to constant rubbing, wiping and scratching

- Allergic conjunctivitis, which can lead to redness, itchiness and teary eyes

- Darkened areas around the eyes

- Headaches

- General fatigue

Why symptoms occur

When exposed to foreign substances such as allergens, the immune system becomes hyper-sensitive and the body reacts.  This is the same kind of reaction that happens when the human body is invaded by microorganisms such as bacteria and viruses.  Once the body is exposed to these types of allergens, it produces substances called histamines which causes inflammation, production of mucus and other symptoms associated with hay fever.

Causes of hay fever

Although pollen is the most common cause of allergies that lead to hay fever, there are other substances that can trigger symptoms as well.  These include dust, molds, pet dander, insects and food.  Although hay fever symptoms can easily be detected, proper diagnosis by a qualified physician is the best way for correct assessment of the condition.

Testing for hay fever allergies

The most common method of determining allergies is skin testing, wherein a minuscule amount of allergen is introduced into the skin to produce a reaction.  The doctor will then try to determine if cross-sensitivity is present, such as when allergies are caused by varying substances with similar protein structures.

Controlling symptoms

As a first step, people with allergies are adviced to avoid or at least minimize contact with substances and items that may trigger an attack.  It’s also important to be aware of your environment and to perform tasks necessary to reduce allergens, avoid work that might aggravate your sensitive skin and protect your body.  With the correct knowledge and treatment regarding Allergic Rhinitis, there is no reason why it cannot be managed efficiently.

John Hilaire asked:

There are a number of allergens that can cause seasonal allergic rhinitis. Most of these identified allergens are airborne, such as the pollen that is blown about from trees, plants and grasses. Another type of airborne allergen, mold spores, is the seasonal culprit of mold allergies.

This type of allergy is generally found from spring to early fall, with a peak in the late summer months, although other types of mold can cause symptoms nearly year-round. The allergens that cause mold allergies are generally found in humid climates, and moist areas like rotted logs and compost piles.

They can also be found indoors in damp basements or closets, or even lurking in your shower stall. Fresh food storage areas are also a popular hangout for mold spores, as well as house plants and certain pieces of furniture.

Why do Mold Allergies Occur?

If you suffer from a mold allergy, your immune system has incorrectly identified mold spores as a substance that is harmful to your body. The response of your immune system is to produce antibodies called immunoglobulin that will create chemicals that will ward off these potentially damaging substances. The result is symptoms like sneezing, wheezing, watery eyes and itching. In the case of a mold allergy, the mold spores are airborne and inhaled into the body through the respiratory tract.

This is why nasal congestion and coughs are common complaints of mold allergy sufferers. The incidence of symptoms from a mold allergy will be dependent on the abundance of the allergen and the ability of the air currents to spread the spores. These factors can be affected by changes in weather patterns throughout the day, making mold counts somewhat ineffective in determining the severity of the allergen exposure.

Treating Mold Allergies

Because mold allergies are airborne, they will most often result in the symptoms of rhinitis, which will include nasal congestion, watery eyes and coughing. The best treatment for rhinitis is generally an over-the-counter antihistamine, decongestant or nasal spray to treat the inflammation and congestion. If over-the-counter medications are not effective in treating your mold allergy symptoms, it is a good idea to see your doctor for possible prescription relief for your mold allergy.

There are a number of medicines that your doctor can recommend to treat your mold allergies through the use of prescription antihistamines and steroidal nasal sprays that will reduce the inflammation in your sinus passages. Allergies to molds and other airborne allergens can cause seasonal or even year-round rhinitis, depending on which allergens affect you. The good news is that there are many options in treating these allergies to allow you more symptom-free days and a higher quality of life.

Bryan Morris asked:


Approximately 50 million Americans have asthma, hay fever or other allergy related conditions.

You can spot them from across the room – tissue in hand, sneezing, sniffling, blowing their nose, tearing, and rubbing their eyes. This is a common presentation for millions of children and adults who suffer from the misery of allergies. If fortunate, these symptoms are but a minor inconvenience, but, if severe, they can significantly affect one’s quality of life.

Allergies involving the nose (rhinitis) and eyes (conjunctivitis) are almost always caused by contact of an offending “allergen” to the mucous membrane lining of the nose or eyes. Constant exposure for the allergic individual can cause daily symptoms, resulting in what your physician would diagnose as persistent, chronic, or perennial allergic rhinitis. Common allergens responsible for these chronic symptoms may include house dust mites, mold spores, indoor pets, cockroach allergen, or feathers.

Symptoms of allergic rhinitis can also be acute or intermittent, presenting only when one is exposed to a relevant allergen. One of the most common presentations of allergies is seasonal allergic rhinitis or “hay fever”. As its name implies, symptoms will present during the pollen seasons, most typically in the spring during the tree and grass pollinating times, and in the fall when ragweed and other weed pollens are present.

You may want to consider a visit to an allergist if the following symptoms are present on a daily basis or seasonally:

• Itchy, swollen, red, tearing eyes

• Itching of the nose, ears, eyes, or throat

• Runny nose

• Sneezing

• Nasal congestion

• Persistent post-nasal drip

Allergic rhinitis is actually one of the easiest diagnoses for your physician to make. If the medical history suggests allergic rhinitis, an allergist will likely perform allergy testing in order to confirm the diagnosis, identify the offending allergen(s), and ascertain the severity of the allergy. The preferable testing method by most allergists is skin testing. This method allows the testing of multiple allergens simultaneously, with the results being immediately available. Alternatively, similar results can be obtained through a blood test called RAST or ImmunoCap.

Once the relevant allergens have been identified, an allergist will recommend a comprehensive treatment plan. This plan may include one or all of the following:

• Environmental control – minimizing exposure to allergens that you are sensitive to

• Pharmacotherpy – medicines including antihistamines, steroid nasal sprays, and other non-steroidal blockers of inflammation

• Immunotherapy or desensitization – extracts of allergens (pollens, dust, molds, etc.) are introduced into the body to induce an immunologic response, resulting in the eventual reduction or elimination of the allergic reaction. Historically, this form of treatment was available only by injection. Recent advances now allow the desensitization process to be given, in selected patients, by taking drops under the tongue, a process called sublingual immunotherapy (SLIT).

The most severe allergic reaction is called anaphylaxis. The most common causes of anaphylaxis include the ingestion of a highly allergenic food, such as peanuts, tree nuts, and shell-fish, or a medicine. The sting of a yellow jacket, wasp, hornet, or honeybee, or the bite of a fire ant can also result in a severe allergic reaction in a susceptible individual.

The symptoms of anaphylaxis vary from person to person. For some, they may be mild and include only generalized itching and urticaria (hives). In more severe reactions, however, they can include involvement of the respiratory, circulatory, and digestive systems, and can be fatal if not treated quickly and aggressively by the administration of epinephrine. Epinephrine can be self injected with the use of an EpiPen or Twinject.

Symptoms of full blown anaphylaxis may include:

• Difficulty breathing

• Hives or swelling

• Tightness of the throat

• Hoarse voice

• Nausea

• Vomiting

• Abdominal pain

• Diarrhea

• Dizziness

• Low blood pressure

• Cardiac arrest

• Shock

Those who have had anaphylaxis or are at risk for anaphylaxis should be evaluated by a board certified allergist for confirmation, identification of the allergen(s), and education regarding prevention, recognition, and self treatment of anaphylaxis.

There are many preventative measures allergy sufferers can take to protect themselves from potentially dangerous allergic reactions. Education is the best medicine. And, consider consulting an allergist for the most complete and up-to-date treatments available.

More detailed descriptions of common allergies and asthma can be found on the website, allergymedsites.com.

Charlene J. Nuble asked:


Allergic rhinitis is often also called nasal allergy, pollinosis or hay fever, especially when it occurs during the haying season.

Allergic rhinitis is the occurrence of several symptoms, usually in the eyes and in the nose, after exposure to particles that may be airborne like plant pollens, dander and most especially, dust.

An oversensitive immune system is usually cited for the occurrence of allergic rhinitis. Take note that the immune system is your shield against harmful and ailment-causing viruses and bacteria. In some people, immune systems react violently to substances or allergens that are not generally harmful or disease-causing.

The most common and primary cause of allergic rhinitis is allergy to pollen. Pollens are very fine and powder-like substances produced by seed plants’ anthers. Allergic rhinitis can be similar to allergic reactions exhibited in some people by allergies to animal dander, inhaled allergens, mold and dust.

Some of the plants that usually produce pollens that cause reported cases of allergic rhinitis are deciduous and evergreen trees, flowering plants, ragweed and grasses.

Identifying allergic rhinitis

The most common manifestations or symptoms of allergic rhinitis are:

o Nasal congestion or what you call stuffy nose

o Wheezing

o Sore throat

o Sneezing

o Teary eyes

o Runny nose

o Smell impairment

o Headache

o Coughing

o Itching in the mouth, throat, nose, eyes, skin or any other areas in the body

How to treat allergic rhinitis

Remember, most allergies are treatable but not curable. Allergic rhinitis is not an exception.

Treatments or medications available or prescribed for allergic rhinitis only reduce symptoms of allergy caused by inflammation in the infected or affected tissues.

Doctors advise that the best treatment would be prevention, but if you happen to already have it, several medications may be of help.

Antihistamines are usually over-the-counter or do not require prescriptions when you buy them in drugstores. Such medicines, however, are only recommended to relieve mild symptoms or moderate symptoms. Take note that antihistamines may cause drowsiness and should not be taken when driving.

There are antihistamines that are specifically described longer-acting. Included in this category are cetirizine and fexofenadine. These types of antihistamines will unlikely cause drowsiness.

Nasal sprays are the most common form of medications taken for allergic rhinitis. They are safe and effective especially for patients whose symptoms are not reduced by antihistamines.

Decongestants are not exclusive for cough. They can also be used to treat allergic rhinitis.

In taking medications, it is important to first seek a doctor’s recommendation and prescription even if some medicines are non-prescription to ensure health and safety. Proper administration and timing is also important. No one wants to get an overdose right?

Preventing allergic rhinitis

Prevention is better than treatment, as always. To prevent the onset of allergic rhinitis, people with history should try to remain indoors or inside air-conditioned rooms especially during the pollination or hay season.

Remember that most pollinating trees produce and air-spread pollens during spring.

In the case of flowers and grasses, they pollinate during summer and ragweeds produce pollen in early autumn.

Bear in mind these trivial but interesting facts so you would know how to prevent getting another allergic rhinitis episode. It could not be that deadly, but it would really feel uncomfortable. One more thing, who says complications do not kill?

Tom alter asked:


Some people who inherit an allergy sensitive background develop certain allergies from time to time. These allergies may be due to many environmental factors and sometimes symptoms of asthma are also impersonated by them. Some common forms of these allergic reactions may be seasonal while others may be perennial in nature.

It is important to understand the differences between these and asthma so that they are never confused with asthma because their treatments as well the severity both differ from each other. Seasonal sneezing is called seasonal allergic rhinitis or hay fever in the common parlance. As against the name it is not caused because of hay but because of certain pollutants mainly certain kinds of pollen in the environment to which a person may be allergic.

In contrast to these people some others suffer with sneezing bouts, stuffy or running nose almost all the year round. These people suffer from perennial sneezing or perennial allergic rhinitis. When these people are exposed to cold wind, sunlight, dust and fumes the symptoms of the sneezing bouts precipitate.

In hay fever or seasonal allergic rhinitis the symptoms appear gradually or all of a sudden. This depends upon the degree of exposure to the offending allergen and also upon the degree to which the person may be allergic to them. When the symptoms appear gradually they are accompanied with mild sensation of itching and burning of the eyes and mild irritation in the nose or itching of the palate inside the mouth.

The symptoms usually appear in the early morning hours when the concentration of pollen grains is at its peak. The sneezing bouts are also accompanied with marked increase in the nasal congestion, throat congestion, running of the nose profusely and watery eyes. The nasal mucous membrane becomes highly sensitive with advancement of symptoms and any slight change in the nasal mucous membrane manifests in heavy bouts of sneezing.

These changes may be of very slight nature like appearance of a draft, strong odours, or even minute quantities of dust. In addition to these symptoms there may be appearance of other associated symptoms like general lethargy, loss of appetite, drowsiness and also pain in the body with slight rise in temperature.

In some patients in addition to the above mentioned conditions the symptoms of bronchial asthma also develop side by side making the conditions worse. These symptoms either develop right from the start of the other symptoms or may develop later as the disease advances. The worse part is that once a person starts with these symptoms he may continue with the symptoms of asthma even after the sneezing attacks stop.

This condition can be very easily diagnosed with the study of the case history of the patient. The tests usually undertaken to identify the pollens are skin tests with extracts of the pollen and scratch or intracutaneous tests giving positive reactions to the pollens simultaneously with a confirmation of the same through consultation of the pollen calendar.

Once the offending pollen is identified the effect of it can be controlled efficiently by hypo sensitization tests. Treatment with antihistamine tablets generally proves to be every effective. But it is only a temporary resort. The allergen has to be properly identified and then treated accordingly with preventive measures and drug therapy if need be.

Taking preventive action to overcome seasonal sneezing attacks is very important. For this undue exposure in a particular season should be completely avoided. Outdoor activities like tending to the garden or farming should not be done. The windows of the rooms should be kept closed as far as possible to avoid exposure to the allergen. In extreme cases using air conditioning may be the only way out.

The patients of perennial sneezing or perennial allergic rhinitis have sneezing, running nose, blocked or stuffy nose and nasal discharge almost all the year round. These people many – a – times are found to be snoring at night and are in the habit of breathing through the mouth. They have discomfort in the ears because of blockage in the ear tubes that open in the throat.

These are called Eustachian tubes. When the irritation persists for a long time a person tends to rub the nose vigorously and repeatedly. This leads to development of a crease across the nose called the allergic crease. Some paranasal sinuses may also get blocked leading to accumulation of secretions.

When the ear, nose and throat get infected repeatedly there may be accompanying fever. Exposure to irritants like cold wind, sunlight, dust, fumes and smoke all lead to aggravation of the symptoms. These symptoms usually occur in the early morning hours and then the symptoms may continue throughout the day and even at night. The symptoms in severe cases may resemble symptoms of asthma accompanied with bronchial spasm and suffocation.

The condition is generally diagnosed after studying the family history of allergy. The lab test of eosinophil count is a must to come to concrete conclusions. Skin test of pollen and other allergens is necessary in case the eosinophil count is normal. Treatment with antihistamines helps very limited people. Nasal drops may provide temporary relief but they should be used very sparingly as they work on the principle of cauterization, that is burning o the mucous membrane of the nose so that the nasal passage becomes insensitive. Hyposensitization works efficiently and surgery may be used in very extreme cases only.

Alisha Dhamani asked:


Allergy shots are given to some people who have persistent and disruptive allergy symptoms. The shots do not treat symptoms, but by altering the immune response they prevent future reactions. (This is referred to as immunotherapy.) Treatment involves a series of shots, each containing a slightly greater amount of the antigen(s) that cause the reaction. Ideally, the person will become “desensitized” to the antigen(s) over time. The effectiveness of shots varies by individual.

Anti-allergy medications are of many types. The choice of medication and how it is given depends on the severity of the reaction.

For relief of long-term allergies such as hay fever or reactions to dust or animal dander, the following medications may be prescribed.

Long-acting prescription antihistamines, such as cetirizine (Zyrtec), fexofenadine (Allegra), and loratadine (Claritin), can relieve symptoms without causing sleepiness. They are meant to be taken for months at a time, even indefinitely. Most have to be taken only once a day and last for 24 hours.

Nasal corticosteroid sprays are widely prescribed for nasal symptoms not relieved by antihistamines. These prescription medications work very well and are safe, without the side effects of taking steroids by mouth or injection. These sprays take a few days to take effect, and must be used every day. Examples are fluticasone (Flonase), mometasone (Nasonex), and triamcinolone (Nasacort).

In some people, cromolyn sodium nasal spray prevents allergic rhinitis, inflammation of the nose that occurs as an allergic reaction. Decongestants can restore sinus drainage, relieving symptoms such as nasal congestion and swelling and runny nose and sinus pain (pain or pressure in the face, especially around the eyes). They are available in oral forms and as nasal sprays. They should be used for only a few days, as they may have side effects such as high blood pressure, rapid heartbeat, and nervousness.

Self-care at home is not enough in severe reactions. A severe reaction is a medical emergency. Do not attempt to treat or “wait out” severe reactions at home. Go immediately to a hospital emergency department. If no one is available to drive you right away, call 911 for emergency medical transport. For more information on what to do in a severe reaction, see Anaphylaxis.

An oral antihistamine, such as diphenhydramine (Benadryl). Caution these may make you too drowsy to drive or operate machinery safely. They can affect concentration and interfere with children’s learning in school. These medications should be taken for only a few days. For rashes, an anti-inflammatory steroid cream such as hydrocortisone