The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Type I Hypersensitivity: Pathogenesis and clinical findings
Definition: Production of lgE Antibodies that bind to harmless allergens
leading to an allergic ... cells recruited Complications ... #TypeI #Type1 #HypersensitivityReaction ... #Allergy #Immunology ... #pathophysiology
Type IV Hypersensitivity: Pathogenesis and clinical findings
Definition: Unique because it is entirely T-Cell mediated; exposure to
mediated; exposure to allergen ... Allergic reaction ... TypeIV #Type4 #HypersensitivityReaction ... #Allergy #Immunology ... #pathophysiology
Type III Hypersensitivity: Pathogenesis and clinical findings
Definition: Small antigen-antibody complexes (produced from normal immune response to
TypeIII #Type3 #HypersensitivityReaction ... #Allergy #Immunology ... #pathophysiology
Type II Hypersensitivity: Pathogenesis and clinical findings
Definition: When antigens bind to the body's cell surfaces, forming
#Type2 #Type2 #HypersensitivityReaction ... #Allergy #Immunology ... #pathophysiology
Anaphylaxis: Signs and Symptoms
Anaphylaxis: when any egg of three conditions is met:
1. Acute onset of skin/mucosal
exposure to a likely allergen ... exposure to known allergen ... Signs / Symptoms / Complications ... #Anaphylaxis #pathophysiology ... #immunology #diagnosis
Retinoblastoma: Pathogenesis and clinical findings
 • Sporadic mutation -> One allele of RB1 tumor suppressor gene
Signs / Symptoms / Complications ... Retinoblastoma #pathophysiology ... #ophthalmology ... #diagnosis #signs
Diabetic Retinopathy: Pathogenesis and clinical findings

Mild Non-proliferative DR
 • Outpouchings of the weakened capillary walls or
Retinopathy #Diabetes #ophthalmology ... #diagnosis #complications ... #pathophysiology
Chronic Hypertensive Retinopathy: Pathogenesis and clinical findings

Ophthalmic Artery Hypertension
Stage 1: Mild/vasoconstrictive
 • Acute and chronic vasospasm
#Retinopathy #pathophysiology ... #ophthalmology ... #diagnosis #signs ... #symptoms #complications