14 results
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Immunological Target: Allergen ... complexes • Ex: Systemic ... Lupus Erythematosus ... , Reactive Arthritis ... #Allergy #Allergic
Type III Hypersensitivity: Pathogenesis and clinical findings
Definition: Small antigen-antibody complexes (produced from normal immune response to
Type III Hypersensitivity ... the cause: • Systemic ... LupusErythematosus ... the cause: • Arthritis ... HypersensitivityReaction #Allergy
Causes of Diffuse Lymphadenopathy - Differential Diagnosis Algorithm
Reactive:
 - Systemic Inflammatory
     •
Reactive: - Systemic ... Inflammatory • Systemic ... Lupus Erythematosus ... • Rheumatoid Arthritis ... • Acne • Allergy
Classification of Vasculitis 
Vasculitis of large vessels 
 - Arteritis temporalis (giant-cell arteritis) 
 - Takayasu
central nervous system ... vasculitis - hypersensitivity ... disease - systemic ... lupus erythematosus ... Vessels #Diagnosis #Rheumatology
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
Hypersensitivity ... - Local and systemic ... glomerulonephritis, rheumatoid arthritis ... , and systemic lupus ... erythematosus
Causes of Isolated Neutropenia - Differential Diagnosis Algorithm
Congenital
Medications
 • Anticonvulsants
 • Antibiotics
 • Antithyroid
 • Antihypertensive
• Epstein-Barr Virus ... Destruction • Systemic ... Lupus Erythematosus ... • Rheumatoid Arthritis ... Algorithm #Causes #Hematology
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
lupus erythematosus ... lupus erythematosus ... • Drug-induced hypersensitivity ... Syndrome #Diagnosis #Management ... #Hematology #Rheumatology
Causes of Myocarditis
Infectious Etiologies:
 • Viral agents: Adenoviruses, Enteroviruses (coxsackievirus), Herpesviruses (human herpesvirus 6, Epstein—Barr virus),
, Epstein—Barr virus ... Interleukin-2 • Hypersensitivity ... , Sarcoidosis, Systemic ... lupus erythematosus ... , Takayasu arteritis
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
table of types of hypersensitivity ... Examples: Rheumatoid arthritis ... glomerulonephritis, Systemic ... lupus erythematosus ... reactions #types #allergy
Causes of Acute Pericarditis:

Infectious;

Viral: 
Adenovirus 
Coxsackie virus A and B 
Echovirus 
Epstein-Barr virus 
Hepatitis 
Human immunodeficiency
Epstein-Barr virus ... Pregnancy Hypersensitivity ... nodosa Rheumatoid arthritis ... Sjögren syndrome Systemic ... lupus erythematosus