4 results
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
antibodies bind to mast ... degranulation of mast ... Complement activation ... #Classification ... Pathophysiology #Allergy #Diagnosis
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
Syndrome (MAS) ... manifestation of MAS ... nervous system (CNS) dysfunction ... Plasma exchange #MAS ... #Syndrome #Diagnosis
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
allergens and activate mast ... degranulation, leading ... because T-Cell activation ... #Classification ... #Diagnosis #Definitions
Hemophagocytic Lymphohistiocytosis (HLH)

High mortality without prompt recognition and management. HLH is a critical diagnostic consideration in
cytopenias and organ dysfunction ... Persistent fever, organ dysfunction ... • In all patients ... Types of HLH • ... (often termed MAS-HLH