Health Library
The Health Library is a collection of health and wellness resources created for learning and accessibility. Select a topic below for related health information or search for a topic in the search bar for more information on other medical conditions.
Allergies and Allergic Reactions
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Provides links to info about allergies. Includes allergic rhinitis and food allergies. Also looks at controlling indoor allergens and whether you should have allergy shots.
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Covers commons allergies, including food, medicine, insect stings, and animals. Covers seasonal allergies like hay fever. Offers home treatment and prevention tips. Includes interactive tool to help you decide when to call a doctor.
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Explains allergies to insect stings. Covers symptoms. Discusses local and systemic reactions. Covers diagnosis and treatment options. Offers home treatment tips.
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Guides you through decision to have allergy-shot immunotherapy to treat allergic rhinitis (hay fever) and allergic asthma. Explains how allergy shots work. Covers who should not have them. Includes interactive tool to help you make your decision.
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Explains what allergy-shot immunotherapy is, why it is done, and what allergies it can help. Covers how it is done, how well it works, and what to expect after treatment. Covers risk factors.
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Many over-the-counter medicines are available to control symptoms of allergies, including allergic rhinitis. These medicines work well but can have side effects. Be safe with medicines. Read and follow all instructions on the label. It is usually best to take only single-ingredient allergy or cold preparations...
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Discusses allergic rhinitis. Covers common immediate and chronic symptoms. Looks at what increases risk. Covers treatment options. Offers prevention and treatment tips.
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Pollen, molds, dust mites, or animal dander cause most allergic rhinitis and trigger asthma attacks in some people. Plants make pollen. The pollens that can cause allergies are usually from trees, grasses, or weeds. These pollens are small, light,...
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Discusses ways to avoid indoor allergy triggers. Covers common indoor allergens such as dust mites and pet dander. Covers reasons to avoid them. Offers cleaning tips to reduce allergens in the home.
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Allergic rhinitis causes symptoms of sneezing, congestion, and a runny nose. But you can control these symptoms with medicine and by avoiding the things that cause them ( allergens). If you are allergic to outdoor allergens, such as pollen and mold, you don't have to give up an outdoor life. You just need to know when...
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Dust builds up throughout your home. The dust may contain substances that trigger asthma symptoms, such as wheezing or coughing, or another allergic reaction, such as the rash of atopic dermatitis or stuffy nose of allergic rhinitis. These substances are called allergens. Dust mites are another example of an allergen...
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Experts can classify allergic rhinitis by how often a person has it and how severe it is. Allergic rhinitis is: Intermittent if you have symptoms fewer than 4 days a week or fewer than 4 weeks a year. Persistent if you have symptoms 4 or more days a week and 4 or more weeks a year. Mild if your...
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Anaphylaxis is a severe allergic reaction. If your child has had a severe allergic reaction in the past, you know how frightening it can be. Symptoms of breathing problems, itching, nausea or vomiting, and swelling can come on quickly and become life-threatening. Giving your child an epinephrine shot can slow down or...
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Learn how to give yourself an epinephrine shot for a severe allergic reaction.
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Learn how to give a child an epinephrine shot to treat a severe allergic reaction.
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Anaphylaxis is a severe allergic reaction. If your child has had a severe allergic reaction in the past, you know how frightening it can be. Symptoms of breathing problems, itching, nausea or vomiting, and swelling can come on quickly and become life-threatening. Giving your child an epinephrine shot can slow down or...
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Covers giving yourself an epinephrine shot to slow down or stop an allergic reaction. Says why you need an epinephrine shot and how to give yourself a shot.
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Diseases affecting the lungs—such as asthma, emphysema, chronic bronchitis, and chronic obstructive pulmonary disease (COPD)—share many of the same medicines. These medicines are often delivered through a metered-dose inhaler (MDI). Using an MDI: Delivers most of a measured dose of medicine directly to your lungs...
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Learn what's going on in the lungs that can make it hard to breathe when you have asthma.
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Provides links to how-to information about asthma. Includes info on asthma in teens and adults, using an asthma action plan, and using inhalers.
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Learn why you need to keep using your corticosteroid inhaler and how to make it easier to use.
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Asthma is more than a day-to-day problem that makes your life difficult. Over time it damages your airways and lungs. That damage can lead to serious health problems. So it's important to keep your asthma under control with medicine. What are the types of asthma medicine? Daily controller medicine prevents asthma...
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Learn how following an asthma action plan can help you control your child's asthma.
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Learn why a long-acting bronchodilator might be added to your child's asthma medicine.
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Learn how to help your child deal with asthma and asthma treatments.
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Learn how expressing your negative feelings about asthma will help you feel better.
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Learn the correct way to use an inhaler that doesn't have a spacer.
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Learn how to use a mask spacer to give a child an inhaled asthma medicine.
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Learn the right way to use a dry powder inhaler to help control your asthma.
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Learn how to use a peak flow meter to check how well your lungs are working.
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Learn why your controller medicines are so important.
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Learn the correct way to use a spacer with your inhaler.
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Learn how following an asthma action plan can help you take control of your asthma.
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Hear how others with asthma have learned to control their symptoms.
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Learn common myths about inhaled steroids, which are some of the best medicines for controlling asthma.
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Learn how to avoid common asthma triggers to better control your symptoms.
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Covers using an asthma action plan for asthma attacks. Explains green, yellow, and red zones in an action plan. Covers what medicines to take in each zone. Reviews what to do if an attack becomes an emergency.
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As someone with asthma, you know how important it is to monitor your condition. Your doctor may want you to know how well your lungs are "working." Is their ability to move air in and out staying the same, or is it getting better or worse? When you monitor your asthma, you can control it. When you control your asthma...
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Asthma is a long-lasting (chronic) disease of the respiratory system. It causes inflammation in tubes that carry air to the lungs (bronchial tubes). The inflammation makes your bronchial tubes likely to overreact to certain triggers. An overreaction can lead to decreased lung function, sudden difficulty breathing, and...
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A nebulizer is a device used to deliver liquid medicine in the form of a fine mist (aerosol). It is sometimes used for asthma because: The medicine can be given over a longer period of time. It may be easier to use for small children or for people...
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Vocal cord dysfunction is the uncontrolled closing of the vocal cords when you breathe in. The symptoms can seem to be the same as those of asthma and may occur alone or along with asthma. If you have asthma and vocal cord dysfunction, it may be...
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An asthma action plan is based on zones defined by your symptoms, your peak flow, or both. It tells you what to do if you or your child has a sudden increase in asthma symptoms (asthma attack). The green zone of the asthma action plan is where a...
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Peak expiratory flow (PEF) measures how much air you or your child can breathe out using the greatest effort. It is used in the monitoring and treatment of asthma to determine how well your lungs are functioning. Your peak flow drops when the tubes...
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Asthma is a long-lasting (chronic) disease that may last throughout your life—you must treat it long term. But following a management plan can be difficult over a long period of time. Here are some reasons you may not follow your management plan....
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Wheezing is a whistling noise that occurs when the bronchial tubes, which carry air to the lungs, narrow because of inflammation or mucus buildup. Wheezing is often present in asthma. During an asthma attack, the bronchial tubes become smaller. At...
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What are the most important things you need to know about your medicines? Make sure you know about each of the medicines you take. This includes why you take it, how to take it, what you can expect while you're taking it, and any warnings about the medicine. The information provided here is general. So be sure...
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What are the most important things you need to know about your medicines? Make sure you know about each of the medicines you take. This includes why you take it, how to take it, what you can expect while you're taking it, and any warnings about the medicine. The information provided here is general. So be sure to read...
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The National Asthma Education and Prevention Program has classified asthma as: Intermittent. Mild persistent. Moderate persistent. Severe persistent. These classifications are based on severity, which is determined by symptoms and lung function tests. You should be assigned to the most...
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Exercise challenge and inhalation challenge tests are sometimes used to diagnose asthma and workplace asthma (occupational asthma). In an exercise challenge test, spirometry is done before and after you exercise on a treadmill or an exercise...
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An asthma action plan is based on zones defined by your symptoms or your peak flow, or both. It tells you what to do if you have a sudden increase in your asthma symptoms (asthma attack). The yellow zone may mean that you are having an asthma attack...
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An asthma trigger is a factor that can lead to sudden difficulty breathing or other symptoms of asthma (asthma attack). Some triggers are substances a person may be allergic to (allergens). Allergens cause the body's natural defenses (immune system)...
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An asthma action plan is based on zones defined by your symptoms, your peak flow, or both. It tells you what to do if you have a sudden increase in your asthma symptoms (asthma attack). You are in the red zone of your asthma action plan if you have...
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Gastroesophageal reflux disease (GERD) is the abnormal backflow, or reflux, of stomach juices into the esophagus, the tube that leads from the throat to the stomach. GERD is found in many people who have asthma. Having asthma increases the chances...
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An asthma attack (also called an acute asthma episode, flare-up, or exacerbation) is a sudden increase in the symptoms of asthma, including: Rapid, shallow, and difficult breathing. Feeling that you cannot take a deep breath (chest tightness)....
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It is important to know the symptoms of difficulty breathing in asthma. If you or your child is having trouble breathing, follow your asthma action plan. You are having mild difficulty breathing if: Your breathing is slightly faster than normal....
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An asthma attack is a short period when breathing becomes difficult, sometimes along with chest tightness, wheezing, and coughing. When this happens during or after exercise, it is known as exercise-induced asthma or exercise-induced bronchospasm....
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The American Academy of Allergy, Asthma, and Immunology (AAAAI) and the American College of Allergy, Asthma, and Immunology (ACAAI) have developed guidelines for getting asthma under control. They list the goals of asthma treatment as:...
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Asthma is a long-lasting (chronic) disease that may last throughout your life—you must treat it long term. Taking medicines and following a management plan can be difficult over a long period of time. Taking daily medicines is often one of the...
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Diagnosis and treatment of asthma can be a challenge if you are age 65 or older. You might have another medical condition that masks your asthma. Or you may be more likely to have side effects from asthma medicines or be at risk for reactions from...
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Exposure to cockroaches may increase asthma symptoms. Cockroaches leave behind particles from their feces, eggs, and shells that can cause an allergic reaction. Cockroaches are a problem in many homes, especially in the southern part of the United States. Here are some steps you can take to remove cockroaches from your...
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Educating yourself and your family about asthma is essential for you and your child to have control of the disease. If you understand asthma, you will have an easier time following the different aspects of treatment, such as avoiding substances that cause symptoms (triggers) and knowing what to do during an asthma...
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Allergy shots are a type of immunotherapy treatment in which small doses of substances to which you are allergic ( allergens) are injected under your skin. Over time, your body may become less responsive to the allergens, which means you may have fewer symptoms. Allergy shots are given after careful skin testing for...
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Covers causes and symptoms of asthma in teens and adults. Includes info on avoiding triggers and treating attacks. Looks at treatment with controller medicine. Covers delivery systems that include metered-dose and dry powder inhalers and nebulizers.
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Dust builds up throughout your home. The dust may contain substances that trigger asthma symptoms, such as wheezing or coughing, or another allergic reaction, such as the rash of atopic dermatitis or stuffy nose of allergic rhinitis. These substances are called allergens. Dust mites are another example of an allergen...
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Covers control of asthma with asthma action plan. Includes working with doctor on a plan and medicines for symptoms and attacks. Includes use of controller medicine and peak flow meter. Reviews avoiding triggers and keeping asthma diary.
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The severity of asthma can vary, and asthma often requires changes in your treatment to control it. To ensure that you are getting the proper treatment, you have to continuously monitor and evaluate the disease and communicate with your doctor. Symptoms Know the symptoms of poorly controlled asthma—wheezing, cough...
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Omalizumab (Xolair) is a medicine approved by the U.S. Food and Drug Administration (FDA) for use in people age 12 and older who have moderate or severe persistent asthma. This medicine costs a lot more than any of the standard treatments for asthma. The medicine works by blocking immunoglobulin E (IgE) from attaching...
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When you use inhaled asthma medicine, you usually use a device that delivers the medicine directly to your lungs. Different types of delivery systems are available. And one type may be more suitable for certain people, age groups, or medicine than another. The following table describes how asthma medicines may be...
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Medicines for quick relief of the narrowed bronchial tubes caused by asthma include short-acting beta2-agonists. These medicines relieve sudden increases of symptoms ( asthma attacks) quickly. But overuse may be harmful. Overuse of short-acting beta2-agonists has been associated with worsening asthma and increased risk...
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An asthma diary helps you keep track of how well you are managing your asthma. If you have symptoms or an asthma attack, record the trigger (if possible), the symptoms, and what kind of medicine you used for relief and how well it worked. Also note if you had to contact your doctor or seek emergency care. This can help...
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Week of ________________________ If I use a peak flow meter: My personal best peak expiratory flow (PEF) is ________ . My PEF for green zone is ___________ liters per second (80% to 100% of my personal best*). My PEF for yellow zone is ___________ liters per second (50% to less than 80% of my personal best*). My...
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An asthma action plan is a written plan that tells you how to treat your asthma on a daily basis. The plan also helps you deal with sudden increases in your or your child's asthma symptoms ( asthma attacks). You need to treat the inflammation in your lungs to minimize the long-term effects of asthma. The plan tells you...
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Understanding asthma can help you control your symptoms and reduce your risk of asthma attacks. The following statements summarize what you should know about asthma. If you do not know, or are not sure, about any of them, talk to your doctor. The more you understand about asthma, the better you will be able to follow...
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Covers using an inhaler to get needed medicine into lungs quickly. Describes dry powder inhalers, how they work, and why to use them. Includes pictures on how to use a dry powder inhaler.
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My name:__________________ Doctor's name: ___________________ Doctor's phone: _______________ Controller medicine How much? How often? Other instructions Quick-relief medicine How much? How often? Other instructions...