Health Information

Allergy and Asthma

  • Topic Index - Allergy and Asthma

    Detailed information on allergy and asthma, including causes, symptoms, diagnosis, control, and treatment

  • All About Allergy

    Detailed information on allergy, including symptoms, diagnosis, and treatment

  • Treatment for Allergy

    The three most effective ways to treat allergies are avoidance, immunotherapy, and medication.

  • Allergens: Animals

    Household pets, like cats and dogs, are the most common sources of animal allergens.

  • All About Asthma

    Asthma is a chronic, inflammatory lung disease with recurrent breathing problems.

  • Allergens: Chemical Sensitivity

    Detailed information on synthetic and natural substances that cause sensitivity to the skin

  • Allergens: Triggers of Allergy Attacks

    Detailed information on allergy triggers and symptom control

  • Contact Dermatitis

    Contact dermatitis is a reaction that occurs after your skin comes in contact with certain substances. Skin irritants cause most contact dermatitis reactions. Other cases are caused by allergens, which trigger an allergic response.

  • Diagnostic Procedures for Allergy

    Detailed information on allergy testing, including blood testing (rast testing) and scratch testing

  • Allergens: Dust and Dust Mites

    Dust mites are microscopic organisms that can live and thrive throughout homes and businesses.

  • Egg Allergy Diet

    Detailed information on egg allergy, a type of food allergy, including egg-free recipes and egg substitutes

  • Asthma and Exercise

    Exercise-induced asthma is different from the typical asthma that is triggered by allergens and/or irritants.

  • Food Allergy
    A food allergy is when your body has a bad reaction to a certain food. This is different than a food intolerance which does not affect the immune system. This is true even though some of the same signs may be present.
  • Home Page - Allergy and Asthma

    Detailed information on allergy and asthma, including causes, symptoms, diagnosis, control, and treatment

  • Allergen: Insect Stings

    Detailed information on allergic reactions to insect bites and stings

  • Diet for Lactose Intolerance

    Detailed information on lactose intolerance, including a list of foods that contain lactose

  • Latex Allergy

    Symptoms of latex allergy include watery or itchy eyes, wheezing, hives, flushing or a skin rash, itching, or swelling.

  • Milk Allergy Diet

    Detailed information on milk allergy, a type of food allergy, including milk-free recipes and milk substitutes

  • Controlling Asthma Triggers at Work

    Many people with asthma have symptoms from triggers in the workplace. This is called occupational asthma.

  • Online Resources - Allergy and Asthma

    List of online resources to find additional information on allergy and asthma

  • Peak Flow Meter

    A peak flow meter for asthma is like a thermometer for a fever—it helps you monitor what's going on inside your lungs by measuring airflow out of the lungs.

  • Peanut Allergy Diet

    Detailed information on peanut allergy, a type of food allergy, including potential sources of peanut protein and other sources of peanut and peanut products

  • Allergens: Poison Ivy/Poison Oak/Poison Sumac

    Poison ivy, poison oak, and poison sumac are native American plants. They may collectively be called poison ivy. These plants cause an allergic reaction in most people who are exposed to them.

  • Allergens: Pollen

    Pollen is the most common cause of seasonal allergic rhinitis, sometimes known as "hay fever."

  • Asthma and Pregnancy

    With proper asthma management and good prenatal care, most women with asthma can have healthy pregnancies.

  • Rhinitis
    Rhinitis is a reaction that happens in the eyes, nose, and throat when allergens in the air trigger the release of histamine in the body. Histamine causes itching, swelling, and fluid to build up in the fragile linings of nasal passages, sinuses, and eyelids.
  • Shellfish Allergy Diet

    Detailed information on shellfish allergy, a type of food allergy, including how to read a label for an shellfish-free diet

  • Soy Allergy Diet

    Detailed information on soy allergy, a type of food allergy, including how to read a label for a soy-free diet and other potential sources of soy or soy product

  • Allergy and Asthma Statistics

    More than 22 million Americans have been diagnosed with asthma. Find out other facts and figures on this chronic disease.

  • Symptomatic Conditions of Allergy

    Detailed information on symptomatic conditions of allergy, including asthma, atopic dermatitis, contact dermatitis, rhinitis, and urticaria

  • Allergies and the Immune System

    Most allergic reactions are a result of an immune system that responds to a "false alarm."

  • Tree Nut Allergy Diet

    Detailed information on tree nut allergy, a type of food allergy, including how to read a label for a tree nut-free diet

  • Urticaria/Hives

    Detailed information on urticaria, also called hives, including what food and medicines commonly cause hives

  • Wheat Allergy Diet

    Detailed information on wheat allergy, a type of food allergy, including how to read a label for a wheat-free diet

  • Allergy Overview
    Allergies are problems of the immune system. Most allergic reactions happen when the immune system reacts to a “false alarm.” Normally, the human body defends itself against harmful things, such as viruses or bacteria. But sometimes the defenses violently attack mostly mild things, such as dust, mold, or pollen.
  • Asthma
    Asthma is a long-term disease of the airways of the lung. The airways become sensitive to triggers (allergens and irritants).
  • Atopic Dermatitis
    Atopic dermatitis, also called eczema, is a chronic skin disorder. It commonly affects infants and may last until adulthood. It causes itchy, scaly patches on the skin.
  • Your Child's Asthma

    How asthma will affect a child throughout his/her lifetime varies, depending on the child.

  • IgG Deficiencies

    Immunoglobulin G, also known as IgG, is one type of a special kind of protein in the body called immunoglobulin. A person with an IgG deficiency is more likely to get infections.

  • Pemphigus Vulgaris
    Pemphigus is a rare group of autoimmune diseases. It causes blisters on the skin and mucous membranes throughout the body. It can affect the mouth, nose, throat, eyes, and genitals.
  • Immunotherapy: What is it?

    Scientists have found a way to use the body's immune system to help treat or defend against a number of health problems. This treatment is known as immunotherapy.

  • Immunoglobulin A Deficiency

    Immunoglobulin A (IgA) is a blood protein that’s part of your immune system. Your body makes IgA to help fight off sickness. Having an IgA deficiency means that you have low levels or no immunoglobulin A in your bloodstream. 

  • Your Asthma Health Care Team

    When you have asthma, you’ll have a team to help you manage your condition. Together, you’ll create your asthma action plan. You may see several health care providers every year who help keep you healthy.

  • Wegener’s Granulomatosis
    Wegener’s granulomatosis is a condition of the immune system. It causes swelling and irritation in blood vessels and other tissues.
  • Sjögren Syndrome

    Sjögren syndrome is an autoimmune disorder. This means that the body’s own immune system attacks its own cells and tissues by mistake. In this case, it attacks the glands that produce moisture. It commonly causes dry skin, dry eyes, and dry mouth.

  • Monoclonal Gammopathies
    Monoclonal gammopathies are conditions in which abnormal proteins are found in the blood.
  • Gaucher Disease
    Gaucher disease is a rare genetic disorder passed down from parents to children (inherited). When you have Gaucher disease, you are missing an enzyme that breaks down fatty substances called lipids. Lipids start to build up in certain organs such as your spleen and liver.
  • Wilson Disease
    Wilson disease is a rare genetic disorder that is passed from parents to children (inherited). It prevents your body from getting rid of extra copper in your system.
  • Glycogen Storage Disease in Children
    Glycogen storage disease (GSD) is a rare condition that changes the way the body uses and stores glycogen, a form of sugar or glucose.
  • Lymphoma

    Lymphomas are cancers that affect the white blood cells and lymphatic system. This system includes hundreds of lymph nodes, which are found all over the body, and the lymphatic vessels that link the nodes.