Allergens: Types, Function, Risks - Verywell Health
网页2024年7月31日 · Allergic reactions are symptoms that result from your body creating these antibodies. Allergies are common, affecting more than 50 million Americans. Types of allergens include those that are airborne or those that arise from contact with your skin, from food, and from medications.
Allergies - Symptoms and causes - Mayo Clinic
网页2024年8月24日 · 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: Symptoms, Reaction, Treatment & Management - Cleveland Clinic
网页2022年12月21日 · Allergies occur when your immune system mistakenly triggers an allergic reaction to an allergen. Allergic reaction symptoms include congestion, watery eyes, a runny nose, vomiting and, in severe cases, anaphylaxis.
Allergy Symptoms: Signs, Symptoms, and Treatment - WebMD
网页2023年11月20日 · Allergies are when your immune system overreacts to something called an allergen. An allergen is a foreign substance that's not harmful to most people, such as pollen or pet dander (skin...
Allergen: MedlinePlus Medical Encyclopedia
网页An allergen is a substance that can cause an allergic reaction. In some people, the immune system recognizes allergens as foreign or dangerous. As a result, the immune system reacts by making a type of antibody called immunoglobulin E (IgE) to defend against the allergen. This reaction leads to allergy symptoms.
Types of Allergies: Triggers, Symptoms, Tips for Managing
网页2024年8月16日 · An allergy is a malfunction of the immune system where the body overreacts to a foreign compound called an allergen. food, medications, latex, insects, airborne compounds, and contact allergens.
Allergies - Diagnosis and treatment - Mayo Clinic
网页2024年8月24日 · Lifestyle and home remedies. Some allergy symptoms get better with steps that you can take at home: Sinus congestion and hay fever symptoms. These often get better with saline nasal sprays. These sprays rinse out …
Allergy Basics: What Happens During an Allergic Reaction? - WebMD
网页2023年11月27日 · Allergic Reactions. Allergic reactions happen when you come into contact with an allergen. Your immune system reacts by releasing histamines and other chemicals into your blood, causing symptoms...
Allergy Symptoms: Mild, Moderate, and Severe Signs - Verywell …
网页3 天之前 · Allergies occur when your immune system has a reaction to a normally harmless foreign substance (known as an allergen) such as dust, pollen, or food, resulting in physical symptoms that can range from mild to life-threatening.
Allergies: Types, Symptoms, Causes, Diagnosis, Treatment and More - Health
网页2024年5月19日 · An allergy is an overactive immune response to a substance called an allergen that is usually harmless, such as pollen or dust. The response results in symptoms such as sneezing,...
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