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.

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.

What is a penicillin allergy? A penicillin allergy is an allergic reaction that occurs when your body's immune system overreacts to these antibiotics. Many people who believe that they have an allergy to penicillin don't have it. They may have a side effect, rather than an allergic reaction. Tests can show if you have a...

Allergy shots are a type of immunotherapy to help treat allergic rhinitis and allergic asthma. Small doses of substances (allergens) are injected under the skin. This may help your immune system reduce or eliminate sensitivity to the allergen that causes an allergic reaction. A doctor will do skin or blood tests to find...

Dust and dust mites are a common indoor allergen. Allergens are things that can trigger an allergic reaction. Allergens can cause a rash, a stuffy nose, or other symptoms such as wheezing or coughing. Dust mites are visible only through a microscope. People are allergic to dust mite droppings, not the dust mites...

When you have allergies, you may feel better or worse at different times of the year. Learning what triggers your allergy symptoms will help you manage and treat your allergies. Managing your allergies is an important part of your health and can help you avoid other problems.

Guides through decision to take shots for insect sting allergies. Describes different types of allergic reactions. Includes how allergy shots work. Covers benefits and risks. Includes an interactive tool to help you make your decision.

Allergy shots are a type of immunotherapy treatment. 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. This means that you may have fewer symptoms. Allergy shots are given after careful skin testing for an...

What is latex allergy? A latex allergy is an allergic reaction that happens after repeated contact with latex, such as latex gloves. It affects people who are often exposed to rubber products. What products may cause latex allergy? Medical products that may contain latex include: Gloves. Drains, tourniquets, urinary...

Allergens, also called antigens, are substances that can trigger an allergic reaction. Having allergies means that the body reacts to allergens as a harmful foreign substance. Allergens may be: Inhaled in the form of pollens, mold, chemicals, material from the droppings of cockroaches and house dust mites, or animal...

Discusses ways to avoid indoor allergy triggers. Covers common indoor allergens such as dust mites and pet dander. Offers cleaning tips to reduce allergens in the home.

Explains what a drug allergy is. Offers a list of symptoms. Covers medicines that can cause an allergic reaction. Discusses how allergies are diagnosed and treated. Provides home treatment options. Covers when to call a doctor.

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.

What is a peanut allergy? A peanut allergy is a reaction that occurs when your body mistakenly identifies peanuts as a harmful substance. When you eat peanuts or food that contains peanuts, your body's immune system overreacts. This can cause a severe allergic reaction that may need immediate medical care. What causes...

What are seasonal allergies? Allergies occur when your body's defense system (immune system) overreacts to certain substances. The immune system treats a harmless substance as if it were a harmful germ or virus. Many things can cause this to happen. Your allergies are seasonal if you have symptoms just at certain times...

A drug allergy happens when the body's immune system overreacts to a substance (allergen) in a medicine that the person has taken. This causes an allergic reaction. Symptoms can include hives or welts, shortness of breath, rash, swelling, redness, and blisters. A drug allergy can cause anaphylaxis in certain people...

Particles in the air (called allergens) can cause allergy symptoms such as sneezing; runny nose; itchy, watery eyes; and itchy ears, nose, and throat.

Atopy (say "AT-uh-pee") is a predisposition to have allergic reactions. People who have this predisposition are called atopic (say "ay-TOP-ick"). Atopic people often have at least one allergic condition, such as asthma, allergic rhinitis (hay fever), atopic dermatitis, hives or angioedema, or food allergies. The...

When you have allergies, you may feel better or worse at different times of the year. Learning what triggers your allergy symptoms will help you manage and treat your allergies. Managing your allergies is an important part of your health and can help you avoid other problems. Pollen Plants make pollen. The pollens that...

Cockroaches leave behind particles from their feces, eggs, and shells that can cause an allergic reaction. These particles, called antigens, can travel through the air, and you can breathe them into your lungs. They can cause coughing, sneezing, itchy eyes, and trouble breathing. You may even have an allergic reaction...

If you drink or eat dairy products and are breastfeeding, the cow's milk protein is passed to your baby. Cow's milk protein is also an ingredient in most infant formulas. Some babies are allergic to this protein. Signs of cow's milk protein allergy include: Hives. Swelling of the face, tongue, mouth, or throat...

Discusses allergic rhinitis. Covers common immediate and chronic symptoms. Looks at what increases risk. Covers treatment options. Offers prevention and treatment tips.

Discusses causes and symptoms of food allergies. Covers what increases risk. Discusses treatment options, including medicine choices. Offers home care and prevention tips. Covers when to call a doctor.