bell work do you have asthma or are you allergic to anything?
TRANSCRIPT
BELL WORK
Do you have asthma or are you allergic to anything?
NON COMMUNICABLE DISEASES
ALLERGY AND ASTHMA
OBJECTIVES
describe how to manage an allergic reaction.
explain what happens during an asthma attack.
identify ways to manage asthma.
ALLERGIES
When a person has an allergy, his or her immune system may react to a harmless substance.allergy An extreme sensitivity to a substance
ALLERGEN
When an allergen enters or comes in contact with a person’s body, the immune system reacts as though it were harmful.allergen Substances that cause allergic reactions
POLLEN
Every day, the U.S. Environmental Protection Agency measures the amount of pollen in the air.pollen A powdery substance released by the flowers of some plants
COMMON ALLERGENS
CommonAllergens
Pollen Insect bitesor stings
Food Plants
HISTAMINES
Allergens bind to white blood cells called lymphocytes, which then release histamineshistamines Chemicals in the body that cause the symptoms of the allergic reaction
HIVES
Some people get hives as a reaction to an allergen.hives Raised bumps on the skin that are very itchy
RESPONSE TO ALLERGENS
Body Responses to Allergens
Eyes Throat Skin
redden, itch, water,eyelids swell difficulty swallowing redness, rash,
hives, itching
Respiratory System Digestive System
runny nose, sneezing,coughing, difficulty
breathing
pain, cramps,diarrhea, nausea
ANTIHISTAMINES
The three basic ways to manage allergies are:• Avoid the allergen• Take medications, such as antihistamines• Get injectionsantihistamines Medicines that help control the
effects triggered by histamines
ASTHMAMore than 20 million people in the United States have asthma.asthma A condition in which the small airways in the lungs narrow, making breathing difficultSome people outgrow their asthma, while others develop the disease in adulthood.
ASTHMA ATTACK
An Asthma Attack
Healthy bronchial tubes are clear and open. Air passes easily through them to fill tiny air sacs in the lungs.
During an asthma attack, muscles around the bronchial tubes tighten. The tubes narrow and their inner lining swells. Excess mucus clogs airways, making breathing difficult.
ASTHMA TRIGGERS
Asthma Triggers
TobaccoSmoke Air Pollution Animal
Dander Cold Air
StrenuousPhysicalActivity
StrongEmotions Stress
CARE FOR ASTHMA
Strategies for managing asthma include:• Manage the environment• Manage stress• Take medication
– Bronchodilators
bronchodilators Reliever medications used to relax the muscles around the air passages