The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Type IV Hypersensitivity: Pathogenesis and clinical findings
Definition: Unique because it is entirely T-Cell mediated; exposure to
mediated; exposure to allergen ... causes development ... of allergen-specific ... Allergic reaction ... Initial exposure to allergen
Type I Hypersensitivity: Pathogenesis and clinical findings
Definition: Production of lgE Antibodies that bind to harmless allergens
leading to an allergic ... Sensitization" to Allergen ... Initial exposure to allergen ... after clearance of allergen ... • Hay fever (allergic
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Immunological Target: Allergen ... fever, Urticaria, Allergic ... Immunological Target: Allergen ... Hypersensitivity #Allergy ... #Allergic #Reactions
Type III Hypersensitivity: Pathogenesis and clinical findings
Definition: Small antigen-antibody complexes (produced from normal immune response to
self-antigens are the cause ... antigens are the cause ... HypersensitivityReaction #Allergy
Childhood Immunization Schedule: Why we immunize
 • Diphtheria Toxin -> URT inflammation causes pseudomembrane with hardened
URT inflammation causes ... within GI and URT causes ... Maternal viremia causes ... Hematogenous spread causes ... evasion techniques cause
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
leading to an allergic ... cell surfaces causes ... leading to an allergic ... causes development ... An allergic reaction
Allergic Rhinitis: Pathogenesis and clinical findings

1. Allergy Sensitization -> Antigen Exposure -> APC (macrophages, HLA class
Allergic Rhinitis ... Allergy Sensitization ... Tissue edema #Allergic
Subtrochanteric Femur Fracture: Pathogenesis and clinical findings
 • Subtrochanteric region spans 5 cm distally from the
fractures in elderly Causes ... Fractures #msk #orthopedics ... #differential #causes
Necrotizing Fasciitis: Pathogenesis and Clinical Findings

#NecrotizingFasciitis #pathophysiology #orthopedics
pathophysiology #orthopedics
Stress Fracture: Pathogenesis and clinical findings
Abnormal biomechanics, Repetitive impact activities
=> Repetitive subthreshold mechanical loading
=> Bone strain
=>
StressFractures #msk #orthopedics