The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Penicillin-induced drug reaction ... Dermatitis (ie. reaction ... Allergy #Allergic #Reactions ... #Types #Classification
Open Fractures: Mechanisms, Clinical Features and Complications
Gustilo-Anderson Classification:
 • Type I
   - Wound <
Gustilo-Anderson Classification ... GustiloAnderson #Classification ... Complications #MSK
Classification of Pelvic Ring Fractures: Mechanisms, Clinical Features and Complications
 • Anterior Posterior Compression (APC) -
Classification of ... PelvicRing #Fractures #Classification ... #Orthopedics #MSK
Anticonvulsants as Mood Stabilizers: Mechanism and Side-effect
Examples: Valproate, Carbamazepine, Lamotrigine
 • Mild anticholinergic effect -> Drowsiness
constipation • Allergic reaction ... mediated cytotoxic reaction
Allergic Rhinitis: Pathogenesis and clinical findings

1. Allergy Sensitization -> Antigen Exposure -> APC (macrophages, HLA class
Primary Reaction ... Secondary Reaction ... after the primary reaction
Representative X-ray appearance of a primary malignant bone tumor - Ewings Sarcoma
 • "Interrupted periosteal reaction
Interrupted periosteal reaction
Spondylosis - Pathogenesis and Complications

Vertebral disease that may compress the vertebral canal from all sides
Note: Do
pathophysiology #msk
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
to an allergic reaction ... causes an immune reaction ... to an allergic reaction ... An allergic reaction ... #Types #Classification
Anaphylaxis: Pathogenesis
Anaphylaxis is a Type 1 hypersensitivity reaction
While the primary mechanism of anaphylaxis is mast cell
hypersensitivity reaction
Stress Fracture: Pathogenesis and clinical findings
Abnormal biomechanics, Repetitive impact activities
=> Repetitive subthreshold mechanical loading
=> Bone strain
=>
StressFractures #msk