11 results
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Penicillin-induced drug reaction ... Syndrome, Contact Dermatitis ... (ie. reaction to ... #Allergic #Reactions ... #Types #Classification
Type IV Hypersensitivity: Pathogenesis and clinical findings
Definition: Unique because it is entirely T-Cell mediated; exposure to
mediated; exposure to allergen ... causes development ... of allergen-specific ... Allergic reaction ... Syndrome • Contact Dermatitis
Hypersensitivity: Definitions
 • Type I - Production of lgE Abs that bind to harmless allergens and
cell surfaces causes ... causes development ... An allergic reaction ... #Allergic #Reactions ... #Types #Classification
Angioedema - Classification Diagnosis and Treatment
Types of Angioedema:
 • Acute allergic angioedema - Usually occurs with
Angioedema - Classification ... exposure • Non-allergic ... drug reaction - ... cell-mediated in > 90% of cases ... #Angioedema #Classification
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Mechanism of Action: Allergen-specific ... lgE causes mast-cell ... Examples: Contact dermatitis ... #types #allergy ... #table #classification
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
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
Soluble antigen - Allergen-specific ... When the specific allergen ... - Contact dermatitis ... Hypersensitivity #Types #Classification ... #Diagnosis #Reactions
A quick infographic on various pearls about atopic dermatitis, a disease with an increasing burden on
Atopic Dermatitis ... treatment #diagnosis #causes ... D, Galloway G, Murray ... Allergy. 2018;73 ... J Allergy Clin Immunol
PALM RASHES 
Common features and patterns:
1.	Color:
o	Red or erythematous: Common in inflammatory or allergic reactions.
o	Purple or purpuric:
inflammatory or allergic ... reactions. ... Seen in systemic causes ... eczema, scabies, or allergic ... disease. 6 Causes
Nail Pathologies - Findings in or Near Nails

Paronychia 

A superficial infection of the proximal and lateral
infection, and allergic ... reactions to nail ... Systemic causes ... photosensitive drug reactions ... or chemical dermatitis