Allergies Immediate hypersensitivity –Excessive IgE production in response to allergens (antigens)

Slides:



Advertisements
Similar presentations
Allergy Awareness & EpiPen ® Use. Common food allergies in children Milk Egg Peanut Tree Nuts Shellfish Fish Soy Whey.
Advertisements

Stings.  Although many different types of insects in the United States are able to inflict a poisonous bite or sting, the insects most likely to cause.
© 2008, YCMOU. All Rights Reserved.1 Online Counseling Resource YCMOU ELearning Drive… School of Architecture, Science and Technology Yashwantrao Chavan.
ALLERGY. No. 1 Hypersensitivity An allergy is a reaction of your immune system to something that does not bother most other people. People who have allergies.
Pollinators Wind Water Insects Birds Rodents Bats Self-pollinating.
Allergy some facts. Allergy Fact It is estimated that 50 million North Americans are affected by allergic conditions. The cost of allergies in the United.
31.1 Pathogens and Human Illness Set up Cornell Notes on pg. 63 Topic: 31.3 Immune Response Essential Question(s): 1.How does inflammation help the immune.
The Immune System and Allergy William L. Houser, Jr., M.D.
The College of Emergency Medicine Acute Allergic Reaction.
FOOD ALLERGIES & INTOLERANCES LIFETIME NUTRITION & WELLNESS.
ALLERGIES. What does an allergy mean? An allergy refers to an exaggerated reaction by our immune system in response to bodily contact with certain foreign.
ALLERGIC REACTIONS Localized Anaphylaxis. ATOPIC DISEASES Localized anaphylaxis (common allergy) ~20% of US population Limited production of IgE and sensitization.
Very little information about allergy. Allergies are an overreaction of the body's immune system to specific substances that it misidentifies as harmful.
Food Allergy Miriam O’Callaghan and Alex Coogan 4 Pearl Ms Cooney.
Allergy Awareness Amelia County Public Schools What is an allergy?  An allergy is an abnormal response to a normal substance. This is the body’s attempt.
Hypersensitivity Reactions: Definitions: Hypersensitivity reactions: inflammatory immune responses induced by repeated antigen exposure resulting in host.
Allergies Child Health Issue. Definition: “An allergy is an overreaction of the immune system to a substance that's harmless to most people” (Nemours.
Introduction to Lab Ex. 24: Hypersensitivity. Response to antigens (allergens) leading to damage Require sensitizing dose(s) Introduction to Lab Ex. 24:
BELL WORK Do you have asthma or are you allergic to anything?
(c) McGraw Hill Ryerson Factors Affecting the Immune System Vaccines are weakened versions of a disease pathogen that are given to people to protect.
Allergic Disease. Atopy The predisposition to produce high quantities of Immunoglobulin (Ig)-E Immediate (Type I hypersensitivity) Mast cells, basophils,
Hypersensitivity. Anaphylaxis Nafiseh Kiamanesh Learning Objectives Knowledge of the mechanism which causes anaphylaxis and the agents which are most.
Immunology Chapter 17 Richard L. Myers, Ph.D. Department of Biology Southwest Missouri State Temple Hall 227 Telephone:
Allergies occur when the immune system responds to harmless antigens.
The Immune System Part 3. What Could Go Wrong? A. Immune Deficiency Disorder B. Hypersensitivity Disorder C. Autoimmune Disorder D. Immunoproliferative.
Boundless Lecture Slides Free to share, print, make copies and changes. Get yours at Available on the Boundless Teaching Platform.
Why do some allergens effect different people in different ways?
11 10/6/2015 Hypersensitive Reactions Allergies Hugh B. Fackrell.
ALLERGOLOGY The branch of medical science that studies the causes and treatment of allergies.
Allergy Awareness. What is an Allergy ? An allergy is a condition of unusual sensitivity which certain individuals may develop to substances ordinarily.
L ECTURES 2014 KEFAH F. HASSOON L ECTURE N O. 1 Immune System Disorders Auto-immune Diseases Hypersensitivity reactions.
Severe Allergic Reaction (Anaphylactic Shock) 过敏性休克 Fang Hong 方 红 1st Affiliated Hospital, Zhejiang University.
Do Now: List 3 things you already know about allergies. Objective: Understand How Allergy Works Key words: allergy, allergens, histamine, inflammatory.
Type I Hypersensitivity (Allergy and Anaphylaxis.
Bledsoe et al., Paramedic Care: Principles & Practice, Volume 3: Medical Emergencies, 3rd Ed. © 2009 by Pearson Education, Inc. Upper Saddle River, NJ.
Immunology Unit Department of Pathology College of Medicine King Saud University.
What is an allergy? Example of allergensAllergic symptoms Example of allergiesHow body responds to allergens?
Anaphylaxis.
Immunopathology Dr JG Lawrenson. Immunopathology Hypersensitivity Autoimmunity Immunodeficiency © Dr JG Lawrenson 2001.
ANAPHYLAXIS BY ANGUS (SCB) AND LACHLAN. WHAT IS THE MEDICAL CONDITIONS? Anaphylaxis is an acute allergic reaction to an allergen (bee sting or peanuts)
Diseases Hypersensitivity- Types
ALLERGIC REACTIONS. HYPERSENSITIVITY State of heightened immune reactivity What causes the problems Multistep Dormant Reaction (either or both) Antibody.
Hypersensitivity Type III and IV. Classification of Hypersensitivity TypeMechanismExample I IgE mediatedSystemic anaphylaxis eg peanut allergy Asthma.
Emergency Health Care (CAMS 231) Unit 11 Bites & Stings.
Allergies Upload Allergic reactions *Watch Discovery Channel "Allergic Reaction"
Dr Mazen Qusaibaty MD, DIS / Head Pulmonary and Internist Department Ibnalnafisse Hospital Ministry of Syrian health – Dr Mazen.
Allergic Reactions & Diseases BTE 303 Romana Siddique 1.
Type 1 Hypersensitivity Initial Exposure “Basic” antigen, B-cell, T-cell interaction B-cells produce IgE IgE circulates through the blood and will attach.
FOOD ALLERGIES & INTOLERANCES LIFETIME NUTRITION & WELLNESS.
Copyright ©2011 by Pearson Education, Inc. Upper Saddle River, New Jersey All rights reserved. Medical Language, Second Edition Susan Turley CHAPTER.
ANTIHISTAMINES Histamine To understand antihistamines you have to slightly understand what it is blocking Histamine – There are 4 different histamine.
Bee Sting Allergy Blair Delaney. What defines “allergic” reaction?  Honey bees and Yellow Jacket wasps are a part of the group of insects known as “Hymenoptera”
Allergic Response HCS2100 SLO: 3.9. ALLERGY Allergy involves antigens and antibodies Allergy or hypersensitivity – a tendency to react unfavorably to.
Allergy The basis of allergy Common symptoms Some common allergens
Noncommunicable Diseases
acute Systemic Anaphylaxis
Hypersensitivity reactions
Histamine, lipid mediators, cytokines
Student J. Student Period 2 January 30, 2013
Allergies occur when the immune system responds to harmless antigens.
Allergies occur when the immune system responds to harmless antigens.
Allergies occur when the immune system responds to harmless antigens.
Allergies occur when the immune system responds to harmless antigens.
Specific (Adaptive) Immunity
Allergies.
Third Line of Defense Immune System Notes.
“Acute anaphylaxis” and “anaphylactic reactions”
Allergies occur when the immune system responds to harmless antigens.
3.2 Factors Affecting the Immune System
Lesson 17: Allergies and Anaphylaxis
Presentation transcript:

Allergies Immediate hypersensitivity –Excessive IgE production in response to allergens (antigens)

Allergic Reaction –B cells secretes allergen specific Ig –Helper T release cytokines which tell B cells to make IgE –B cell switches from IgG to IgE –IgE binds to mast cells and basophils –Next exposure triggers these cells to secrete histamine, prostaglandins, etc.

Allergic Reaction Common Allergens –Foods –Insect venom –Molds –Animal dander –Pollen

‘Bee’ Sting ResponsesBee CategoryNormalAllergicToxic Characteristics In area of wheal: Pain Inflammation Redness Swelling Itching All over body: Itching; hives Swelling Wheezing Breathing difficulty Dizziness Due to multiple stings -too much venom Treatment Cold pack Antihistamine ointment Sympathy Oral antihistamine Ice pack Epi-pen Watch and base on symptoms for up to 5 hrs

‘Bee’ Sting Response After your first bee sting reaction, future bee stings double and triple in severity. –True –False

‘Bee’ Sting Response After your first bee sting reaction, future bee stings double and triple in severity. –False – Most studies show that repeated stings appear to have a lesser reaction.

‘Bee’ Sting Response Elderly individuals are more susceptible to severe reactions. –True –False

‘Bee’ Sting Response Elderly individuals are more susceptible to severe reactions. –False – As you age, your histamine production declines.

‘Bee’ Sting Response Bees can see and sting in the dark. –True –False

‘Bee’ Sting Response Bees can see and sting in the dark. –Neither. Bees can’t see in the dark but they can STILL sting!

‘Bee’ Sting Response Severe anaphylactic reactions usually occur in the first 5-10 minutes.. –True –False

‘Bee’ Sting Response Severe anaphylactic reactions usually occur in the first 5-10 minutes.. –False – minutes is the average. Reactions may occur up to 5 hours later but 60% occur in the first hour. –Source of quiz:

‘Bee’ Sting Response If you are allergic to bee stings, then you are automatically allergic to wasp stings. –True –False

‘Bee’ Sting Response If you are allergic to bee stings, then you are automatically allergic to wasp stings. –False – Bee venom and wasp venom differ. You can be allergic to either but only a small % are allergic to both. Source:

Bibliography Buchmann, Dr. Stephen “What’s Buzzin in my Garden.’ Caron, Dewey M Honey Bee Biology and beekeeping. Wicwas Press, LLC. Raven, Peter H., et al Biology, 8 th ed. McGraw Hill Higher Education. New York, N.Y. Survive Outdoors, Inc Bee stings. Vetter, R.S Misconceptions about Yellowjackets.