14 results
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Syndrome, Contact Dermatitis ... (ie. reaction to ... #Allergic #Reactions ... #Types #Classification ... #Diagnosis #Definitions
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
allergic reaction ... An allergic reaction ... #Allergic #Reactions ... #Types #Classification ... #Diagnosis #Definitions
Vesiculobullous Skin Rash - Differential Diagnosis Algorithm
Vesicles Fragile/EasiIy Ruptured - Intraepidermal blisters, possibly crusts/erosions
 - Inflammatory
- Differential Diagnosis ... • Contact dermatitis ... Vesiculobullous #SkinRash ... #Differential #Diagnosis ... #Algorithm #causes
Angioedema - Classification Diagnosis and Treatment
Types of Angioedema:
 • Acute allergic angioedema - Usually occurs with
Angioedema - Classification ... Diagnosis and Treatment ... drug reaction - ... cell-mediated in > 90% of cases ... #Types #Diagnosis
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
lgE causes mast-cell ... cell antigens, leading ... Examples: Contact dermatitis ... #types #allergy ... #table #classification
Eczematous Skin Rash - Differential Diagnosis Algorithm
Eczematous - Pruritic/Scaly/Erythematous lesions. Usually poorly demarcated
 • Atopic Dermatitis
- Differential Diagnosis ... anyone - Allergic ... #Eczematous #SkinRash ... #Differential #Diagnosis ... #Algorithm #causes
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
When the specific allergen ... cellular antigen, leading ... - Contact dermatitis ... Hypersensitivity #Types #Classification ... #Diagnosis #Reactions
Causes of Pseudocellulitis - Differential Diagnosis Framework for Cellulitis Mimics

Cellulitis: Deep skin and subcutaneous fat infection

Pseudo
antibiotics and avoid allergic ... reactions, C. diff ... Pseudocellulitis: • Drug reaction ... • Contact dermatitis ... stasis • Stasis dermatitis
A quick infographic on various pearls about atopic dermatitis, a disease with an increasing burden on
medications #treatment #diagnosis ... #causes #atopy ... #dermatology #skinrash ... Allergy. 2018;73 ... J Allergy Clin Immunol
Blood Transfusion Reactions

Immune Mediated:
 • Febrile Non-Hemolytic Transfusion Reaction (FNHTR): Most common immune reaction to transfusion.
Allergic reaction ... Causes purpura & ... cause of transfusion ... more likely to cause ... #Transfusion #diagnosis