17 results
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
anemia, Penicillin-induced ... • Ex: Systemic Lupus ... #Allergic #Reactions ... #Types #Classification ... #Diagnosis #Definitions
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 ... blood loss, Acute hemolysis ... , deficiency anemia ... post-splenectomy, Exercise, Allergic ... #Diagnosis #Algorithm
Vesiculobullous Skin Rash - Differential Diagnosis Algorithm
Vesicles Fragile/EasiIy Ruptured - Intraepidermal blisters, possibly crusts/erosions
 - Inflammatory
Diagnosis Algorithm ... • Contact dermatitis ... Bullous systemic lupus ... Vesiculobullous #SkinRash ... #Diagnosis #Algorithm
Causes of Anemia by Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Low Mean Corpuscular Volume (<80
Diagnosis Algorithm ... • Bleeding • Hemolysis ... #MCV #Classification ... Diagnosis #Algorithm ... #Causes #Hematology
Differential Diagnosis for Hemolytic Anemia
Intrinsic Causes:
 • Enzyme deficiencies ex. G6PD, pyruvate kinase 
 • Hemoglobinopathies
Differential Diagnosis ... for Hemolytic Anemia ... • Transfusion reactions ... #Anemia #Differential ... #classification
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
types or during hemolytic ... , and systemic lupus ... - Contact dermatitis ... Hypersensitivity #Types #Classification ... #Diagnosis #Reactions
Overall Approach to Anemia - Differential Diagnosis Algorithm

Blood Loss
 • Acute Bleed - Normocytic / Normochromic
- Differential ... Diagnosis Algorithm ... #Classification ... #Diagnosis #Algorithm ... #Causes #Hematology
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
Hemolytic Anemia ... Diagnosis Algorithm ... Consider RBC membrane disorder ... #Anemia #Differential ... #Diagnosis #Algorithm
Causes of Splenomegaly - Differential Diagnosis Algorithm
Infectious
 • Bacterial
 • Viral (EBV)
 • Parasitic
 • Fungal
Congestive
Diagnosis Algorithm ... Myeloproliferative disorders ... Inflammatory • Systemic Lupus ... Serum Sickness Hemolytic ... #Diagnosis #Algorithm