16 results
Hypersensitivity: Summary
Type I Hypersensitivity:
 • Immunological Mediator: lgE
 • Immunological Target: Allergen Molecules
 • Ex: Antibiotic
Immunological Target: Allergen ... fever, Urticaria, Allergic ... Gravis, Graves' Disease ... • Ex: Systemic Lupus ... , Contact Dermatitis
Connective tissue disease-associated interstitial lung diseases

LIP: lymphoid interstitial pneumonia. NSIP: nonspecific interstitial pneumonia. OP: organizing pneumonia.
Connective tissue disease-associated ... interstitial lung diseases ... PSS: Sjogren syndrome ... : systemic lupus ... connective tissue disease
Eosinophilia - Differential Diagnosis Algorithm
Idiopathic Eosinophilia
Primary Eosinophilia:
 • Primary hypereosinophilic syndrome
 • Eosinophilic Leukemia
 • MPN/MDS
histiocytosis • Allergic ... AI: EGPA, IgG-4 disease ... , Behcet disease ... Chronic inflammatory disease ... Diagnosis #Algorithm #allergy
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
Interstitial Lung Diseases ... a.k.a. extrinsic allergic ... Connective Tissue Disease ... connective tissue disease ... Interstitial #Lung #Diseases
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
ANA ≠ Autoimmune Disease ... • Rheumatic Diseases ... : Lupus (SLE), Systemic ... , Interstitial Pulmonary ... rheumatology #diagnosis #differential
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Peripheral edema, Disease-specific ... vasculitis, Behcet disease ... Complex: Systemic lupus ... Goodpasture's Disease ... dysmorphic RBCs) • Disease-specific
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Mechanism of Action: Allergen-specific ... reaction, Haemolytic disease ... Examples: Contact dermatitis ... reactions #types #allergy ... classification #comparison
Approach to Eosinophilic Lung Diseases
 • Acute Eosinophilic Pneumonia (< 1 wk) - ~30yo, M; Recent
Eosinophilic Lung Diseases ... loss, malaise • Allergic ... Eosinophilic #Lung #Diseases ... #pulmonary #differential ... #diagnosis #comparison
Headache Etiologies and Associated Spectrum of Severity of Disease by System
Critical, Emergent and Non-Emergent Causes
CNS, neurologic,
of Severity of Disease ... Collagen vascular disease ... Musculoskeletal Allergy ... Infectious disease ... Pulmonary or oxygen
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
disease, and ocular ... pain • Kawasaki Disease ... (Granulomatous disease ... atherosclerotic disease ... most important diseases