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
Allergic reaction ... Stevens-Johnson Syndrome ... TypeIV #Type4 #HypersensitivityReaction ... #Allergy #Immunology ... #pathophysiology
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 III Hypersensitivity: Pathogenesis and clinical findings
Definition: Small antigen-antibody complexes (produced from normal immune response to
TypeIII #Type3 #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 ... / Symptoms / Complications ... #Anaphylaxis #pathophysiology ... #immunology #diagnosis
Type II Hypersensitivity: Pathogenesis and clinical findings
Definition: When antigens bind to the body's cell surfaces, forming
#Type2 #Type2 #HypersensitivityReaction ... #Allergy #Immunology ... #pathophysiology
Systemic Lupus Erythematosus: Gastrointestinal Manifestations
 - Thrombosis of vessels in the pancreas, Vasculitis -> Acute Pancreatitis
- Budd Chiari Syndrome ... Gastrointestinal #Complications ... #pathophysiology ... #signs #symptoms
Prader-Willi Syndrome: Pathogenesis and clinical findings
 • Maternal uniparental disomy: inheriting 2 copies of maternal chromosome
Prader-Willi Syndrome ... =>Prader-Willi Syndrome ... Signs/Symptoms ... /Complications: ... #genetics #pathophysiology
Alzheimer’s Disease: Pathogenesis and Clinical Findings
Risk factor for Late Onset Alzheimer's (99% of cases):
 - Increasing
mutations - Down syndrome ... chromosome 21) Signs ... / Symptoms / Complications ... AlzheimersDisease #Dementia #pathophysiology ... geriatrics #diagnosis #signs
Cauda Equina Syndrome
Causes:
 • Large lumbar degenerative disc herniation (central)
 • Severe lumbar spondylosis
 • Neoplasm
Cauda Equina Syndrome ... lumbar spine Signs ... / Symptoms / Complications ... #CaudaEquina #Syndrome ... #MSK #pathophysiology
Keratoconus: Pathogenesis and Clinical Findings
Genetics
 • Family history of keratoconus
 • Ehlers-Danlos syndrome
 • Down, Turner,
Ehlers-Danlos syndrome ... Turner, Marfan syndromes ... / Symptoms / Complications ... • Rizutti's Sign ... #Keratoconus #pathophysiology