11 results
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Autoimmune Hemolytic anemia ... • 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 ... #Causes #differential ... #diagnosis #hematology
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
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
Platelet Count - Differential ... Diagnosis Algorithm ... hemolysis, deficiency anemia ... post-splenectomy, Exercise, Allergic ... #Diagnosis #Algorithm
Differential Diagnosis for Hemolytic Anemia
Intrinsic Causes:
 • Enzyme deficiencies ex. G6PD, pyruvate kinase 
 • Hemoglobinopathies
Differential Diagnosis ... for Hemolytic Anemia ... • Transfusion reactions ... #classification ... #hematology
Overall Approach to Anemia - Differential Diagnosis Algorithm

Blood Loss
 • Acute Bleed - Normocytic / Normochromic
- Differential ... Diagnosis Algorithm ... #Classification ... #Diagnosis #Algorithm ... #Causes #Hematology
Eosinophil Disorders Testing Algorithm
INDICATIONS FOR TESTING:
 • Peripheral blood eosinophilia/hypereosinophilia uncovered incidentally during medical evaluation or
Testing Algorithm ... causes are asthma, allergy ... , drug reaction, ... #Algorithm #Differential ... #diagnosis #hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
- Hemolytic anemia ... Pigmented Purpuric Dermatosis ... fever • Drug reactions ... #Diagnosis #hematology ... #rheumatology #
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
Skin Disease Classification ... permanent alopecia Differential ... Non-autoimmune rheumatologic ... lymphopenia, low PLT • Anemia ... #Rheumatology
Oral / Mouth Lesions and Ulcers (Adult & Elderly) - Differential Diagnosis Algorithm

Teeth
 • GERD (Dissolves
Diagnosis Algorithm ... • Mucocele • Allergic ... Reaction Non-Ulcerating ... #Oral #Mouth #Disorders ... #Diagnosis #Algorithm