Allergies - Symptoms and causes - Mayo Clinic Allergies happen when the immune system reacts to a foreign substance that gets inside the body These substances are known as allergens They include pollen, bee venom and pet dander Allergies also can happen due to certain foods and medicines that don't cause reactions in most people
Allergies - Diagnosis and treatment - Mayo Clinic A healthcare professional uses a tiny needle to prick or scratch your skin and expose you to small amounts of the proteins found in your potential allergens If you're allergic, you'll likely develop a raised bump called a hive at the test area on your skin
Allergy-proof your home - Mayo Clinic If you have hay fever or allergic asthma symptoms throughout the year, take a few steps to reduce allergens in your home Here are some room-by-room suggestions
Dust mite allergy - Symptoms causes - Mayo Clinic Burks AW, et al Indoor allergens In: Middleton's Allergy: Principles and Practice 9th ed Elsevier; 2020 https: www clinicalkey com Accessed April 28, 2021 Eguiluz-Gracia I, et al Precision medicine in house dust mite-driven allergic asthma
Allergies and asthma: They often occur together - Mayo Clinic Allergy shots can help treat asthma They gradually reduce your immune system response to certain allergy triggers This treatment involves getting regular shots The shots have a tiny amount of the allergens that trigger your symptoms
Seasonal allergies: Nip them in the bud - Mayo Clinic To reduce your exposure to the things that trigger your allergy signs and symptoms (allergens): Stay indoors on dry, windy days The best time to go outside is after a good rain, which helps clear pollen from the air Avoid lawn mowing, weed pulling and other gardening chores that stir up allergens
Drug allergy - Symptoms and causes - Mayo Clinic Causes A drug allergy happens when the immune system mistakenly identifies a medicine as a harmful substance, such as a virus or bacterium Once the immune system detects a medicine as a harmful substance, it develops an antibody specific to that medicine
Pet allergy - Symptoms causes - Mayo Clinic Allergens from cats and dogs are found in skin cells the animals shed (dander), as well as in their saliva, urine and sweat and on their fur Dander is a particular problem because it is very small and can remain airborne for long periods of time with the slightest bit of air circulation
Food allergy - Diagnosis and treatment - Mayo Clinic Read food labels carefully to avoid the most common sources of food allergens: milk, eggs, peanuts, tree nuts, fish, shellfish, soy and wheat When in doubt, say no thanks At restaurants and social gatherings, you're always taking a risk that you might eat a food you're allergic to
Mayo Clinic Q and A: Allergies or a virus? How to tell the difference Allergies, on the other hand, are not caused by a virus but rather by immune system responses triggered by exposure to allergens, such as seasonal tree or grass pollens Sneezing and runny noses are two symptoms of allergies