Allergies Flashcards
Symptoms
Cold-like symptoms (sneezing, runny nose), geographic tongue, hives, blisters (contact dermatitis).
Allergy:
Allergy: Immune system reacts to the food
Common Allergens:
Environmental: Pollen, dust, mold, pet dander, latex, insect stings.
Food: Peanuts, gluten, lactose, shellfish.
Drugs: Penicillin, NSAIDs.
Immune System and Allergies
Role of IgE Antibodies: Produced in response to allergens.
Bind to mast cells; subsequent exposure triggers histamine release
Memory Cells: IgE antibodies remain specific to allergens (e.g., pollen)
Lymphatic System Components:
Lymph nodes, spleen, tonsils, Peyer’s patches (small intestine).
Intolerance
Substances in food produce adverse reaction
- Lactose intolerance (inablity to digest lactose) - lactase enzyme convert lactose to glucose
histamine
produce allergy symptoms
common allergen
Nickel, Nickel alloys, henna tattos, dust allergies, pets, pet saliva
Antihistamines
Block histamine receptors; histamine antagonist
1st Gen: Diphenhydramine (Benadryl) – drowsy; enter brain
2nd Gen: Loratadine (Claritin), fexofenadine (Allegra) – non-drowsy; can’t enter brain
body convert loratadine to _____
Desloratadine
50% of allergies progress to _____
asthma
__________ is a selective adrenaline agonist
Salbutamol
Adrenaline agonist function?
open airway in the lungs; high dose will stimulate the heart; overuse causes heart attack