Learning Objectives By the end of this section, you will be able to: The natural protein derived from the sap of the rubber tree, Hevea brasiliensis, is used to create latex. Latex allergies can cause allergic reactions including conjunctivitis, rhinitis, urticaria, asthma,…

Learning Objectives By the end of this section, you will be able to: Food allergies are IgE-mediated type I hypersensitivity reactions. Over 170 foods have been reported to cause allergic reactions. The most common foods known to cause food allergies are peanuts,…

Learning Objectives By the end of this section, you will be able to: Hives, or urticaria, is a type I hypersensitivity allergic reaction involving the skin. Angioedema, or angioneurotic edema, is a condition that is manifested by urticaria and dispersed swelling of…

Learning Objectives By the end of this section, you will be able to: Inflammation of the skin, or dermatitis, encompasses several types of skin conditions with the same inflammatory reaction pattern and manifestations. Depending on the type of dermatitis, the…

Learning Objectives By the end of this section, you will be able to: The most common type of respiratory allergy is allergic rhinitis, which is a localized allergic reaction in the sinuses, like hay fever or seasonal allergic rhinitis. It affects about one…

Learning Objectives By the end of this section, you will be able to: Allergic responses are the ways the body responds to a pathogen or intruder. When it overreacts, it can develop into an allergic disorder that is an inappropriate…

Figure 24.1 EpiPens are hypodermic devices that deliver a dose of epinephrine for emergency treatment of acute allergic reactions and to prevent or improve anaphylaxis. (credit: New Jersey National Guard/Flickr, Public Domain) Chapter Outline 24.1 Allergic Response 24.2 Allergic Rhinitis 24.3 Types of Dermatitis 24.4 Urticaria…