10 results
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Hypersensitivity: Summary Type ... conjunctivitis Type ... • Ex: Systemic Lupus ... Syndrome, Contact Dermatitis ... #Diagnosis #Definitions
Eczematous Skin Rash - Differential Diagnosis Algorithm
Eczematous - Pruritic/Scaly/Erythematous lesions. Usually poorly demarcated
 • Atopic Dermatitis
- Differential Diagnosis ... Algorithm Eczematous ... demarcated • Atopic ... anyone - Allergic ... #Eczematous #SkinRash
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
Soluble antigen - Allergen-specific ... When the specific allergen ... , and systemic lupus ... - Contact dermatitis ... #Diagnosis #Reactions
Vesiculobullous Skin Rash - Differential Diagnosis Algorithm
Vesicles Fragile/EasiIy Ruptured - Intraepidermal blisters, possibly crusts/erosions
 - Inflammatory
- Differential Diagnosis ... Algorithm Vesicles ... Bullous systemic lupus ... Vesiculobullous #SkinRash ... #Algorithm #causes
A quick infographic on various pearls about atopic dermatitis, a disease with an increasing burden on
Atopic Dermatitis ... medications #treatment #diagnosis ... #atopic #dermatitis ... #dermatology #skinrash ... Allergy. 2018;73
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Mechanism of Action: Allergen-specific ... glomerulonephritis, Systemic lupus ... Examples: Contact dermatitis ... #allergy #table ... classification #comparison
Papulosquamous Skin Rash - Differential Diagnosis Algorithm
Erythrematous or violaceous papules & plaques with overlying scale
 •
- Differential Diagnosis ... Algorithm Erythrematous ... soles • Discoid Lupus ... Scarring and/or atrophic ... Papulosquamous #SkinRash
Moccasin-variety Tinea Pedis 
70 M chronic scaly feet. Over the years: rash has itched only occasionally;
Diagnosis? ... Moccasin type ... ; dyshidrotic, atopic ... , or allergic eczematous ... dermatitis; pitted
Sweet Syndrome

Acute febrile neutrophilic dermatosis (Sweets Syndrome) is a skin condition characterized by fever and inflamed
febrile neutrophilic dermatosis ... such as certain types ... CANDLE syndrome - Allergic ... contact dermatitis ... ’s syndrome - Lupus
Bradykinin-mediated Angioedema
Clinical features: Submucosal oedema (face, extremity, genitalia), Laryngeal dyspnea (25% of deaths), Recurrent attacks of
abdominal pain Types ... autoimmune disease (lupus ... • Absence of atopic ... mediated #Angioedema #allergy ... #immunology #diagnosis