2933 results
Eosinophils (Eos) and hypereosinophilia (HE)
Caused by eosinophilopoietic cytokines
Common causes:
 - Drug reaction
 - Helminth infection
 -
hypereosinophilia (HE) Caused ... cytokines Common causes ... : - Drug reaction ... infection - Allergic reaction ... disease Rare causes
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
to an allergic reaction ... cell surfaces causes ... an immune reaction ... to an allergic reaction ... exposure to allergen causes
Basophilia - Differential Diagnosis Framework

Basophils < 1% of the total white blood cell count
Basophils function similarly
during an allergic reaction ... Or Inflammatory Reactions ... Chickenpox Other Causes ... Differential #Diagnosis #causes
Hemolysis Classification - Intrinsic and Extrinsic Causes

Commentary: Another way to think of immune hemolysis would be
and Extrinsic Causes ... autoimmune (most of the causes ... hemolytic transfusion reactions ... Differential #Diagnosis #Causes
Causes of Pseudocellulitis - Differential Diagnosis Framework for Cellulitis Mimics

Cellulitis: Deep skin and subcutaneous fat infection

Pseudo
Causes of Pseudocellulitis ... avoid allergic reactions ... Inflammatory Causes ... Pseudocellulitis: • Drug reaction ... Neoplastic Causes
Blood Transfusion Reactions

Immune Mediated:
 • Febrile Non-Hemolytic Transfusion Reaction (FNHTR): Most common immune reaction to transfusion.
Blood Transfusion Reactions ... common immune reaction ... Causes purpura & ... TRALI): Leading cause ... more likely to cause
Vesiculobullous Skin Rash - Differential Diagnosis Algorithm
Vesicles Fragile/EasiIy Ruptured - Intraepidermal blisters, possibly crusts/erosions
 - Inflammatory
blisters, possibly crusts ... Bullous impetigo - Reaction ... diabeticorum) - Reaction ... Diagnosis #Algorithm #causes
Differential Diagnosis for Hemolytic Anemia
Intrinsic Causes:
 • Enzyme deficiencies ex. G6PD, pyruvate kinase 
 • Hemoglobinopathies
Anemia Intrinsic Causes ... elliptocytosis Extrinsic Causes ... Intravascular Causes ... • Transfusion reactions ... Differential #Diagnosis #causes
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
hypersensitivity reactions ... Allergen-specific lgE causes ... Acute transfusion reaction ... hypersensitivity #reactions
Blood Product Transfusions One Pager Summary
Type and screen - determines blood type and detects in recipient
common immune reaction ... once had another reaction ... Causes purpura & ... TRALI): Leading cause ... more likely to cause