6 results
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
• Ex: Systemic Lupus ... Erythematosus, ... Syndrome, Contact Dermatitis ... #Allergy #Allergic ... #Classification
Vesiculobullous Skin Rash - Differential Diagnosis Algorithm
Vesicles Fragile/EasiIy Ruptured - Intraepidermal blisters, possibly crusts/erosions
 - Inflammatory
Vesiculobullous ... • Contact dermatitis ... Bullous systemic lupus ... erythematous ... #SkinRash #dermatology
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
Hypersensitivity ... , and systemic lupus ... erythematosus ... - Contact dermatitis ... #Types #Classification
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• They can cause ... vasculitis • Hypersensitivity ... (e.g. systemic lupus ... erythematosus ( ... #classification
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
lgE causes mast-cell ... glomerulonephritis, Systemic lupus ... erythematosus Type ... Examples: Contact dermatitis ... #classification
Moccasin-variety Tinea Pedis 
70 M chronic scaly feet. Over the years: rash has itched only occasionally;
dermatophytes cause ... sp. pruritic, erythematous ... dyshidrotic, atopic, or allergic ... eczematous dermatitis ... #photo #foot #dermatology