An allergy is a reaction by the body's immune system to a substance that is normally harmless.
An allergy is a reaction by the body's immune system to a substance that is normally harmless.
When someone with an allergy comes into contact with an allergen, their immune system overreacts and produces antibodies called immunoglobulin E (IgE).
When someone with an allergy comes into contact with an allergen, their immune system overreacts and produces antibodies called immunoglobulin E (IgE).
These antibodies bind to cells in the body that release histamine and other chemicals, which cause allergy symptoms.
These antibodies bind to cells in the body that release histamine and other chemicals, which cause allergy symptoms.
Types of allergies
There are many different types of allergies, including:
There are many different types of allergies, including:
Food allergies: These are caused by a reaction to a specific food, such as peanuts, milk, or eggs.
Food allergies: These are caused by a reaction to a specific food, such as peanuts, milk, or eggs.