Improving the health of children and teens
Children's Physician Network Home Page

SEARCH
   

HomeFor ClinicsFor ProvidersFor FamiliesClinics & Physician ListHow To Contact Us

FOR FAMILIES

ABOUT US

CHOOSING YOUR CHILD'S DOCTOR

EMERGENCY PLANNING RESOURCES

HEALTH INFORMATION

FOR KIDS

FOR TEENS

FOR PARENTS

LINKS

Definition: Histamine

Definition: Histamine

Histamine

(Histamina)

Histamine - a chemical found in some of the body's cells - causes many of the symptoms of allergies, such as a runny nose or sneezing. When a person is allergic to a particular substance, such as a food or dust, the immune system mistakenly believes that this usually harmless substance is actually harmful to the body. In an attempt to protect the body, the immune system starts a chain reaction that prompts some of the body's cells to release histamine and other chemicals into the bloodstream. The histamine then acts on a person's eyes, nose, throat, lungs, skin, or gastrointestinal tract, causing allergy symptoms.