5 results
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
anemia, Penicillin-induced ... • Ex: Systemic Lupus ... #Reactions #Types ... #Classification ... #Diagnosis #Definitions
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
or during hemolytic ... , and systemic lupus ... - Contact dermatitis ... #Types #Classification ... #Diagnosis #Reactions
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Diagnostic Framework ... usually IgG) (e.g. lupus ... lymphoproliferative disorders ... Extravascular #Causes #differential ... #diagnosis #hematology
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
Diagnosis Algorithm ... → Refer to hematology ... , deficiency anemia ... #Diagnosis #Algorithm ... #hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
DIC/TTP/HUS - Hemolytic ... anemia - Splenomegaly ... Pigmented Purpuric Dermatosis ... fever • Drug reactions ... #Diagnosis #hematology