27 results
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
- Bone marrow disease ... deficiency • Liver disease ... Von Willebrand disease ... Differential #Diagnosis #hematology ... #rheumatology #
Systemic Lupus Erythematosus - Summary
Antinuclear (ANA) - 95% - Initial screening test
Anti-dsDNA - 50%
 • Associated
with more severe disease ... & renal involvement ... heart block • Sjogren ... Summary #diagnosis #rheumatology ... #management
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
Disease! ... Rheumatic Diseases ... ), Sjogren's Syndrome ... Lymphoproliferative Disorders ... #patterns #rheumatology
Causes of Bleeding / Bruising - Differential Diagnosis Algorithm
Thrombocytopenia - Quantitative Defect
 • Decreased Production
 •
Causes of Bleeding ... ASA) • Renal Disease ... Von Willebrand's Disease ... Iatrogenic) • Liver Disease ... #Causes #Hematology
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
Sjögren syndrome ... connective tissue disease ... 90% • Anti-GBM disease ... antibodies #diagnosis #rheumatology ... #diseases
Nail Disorders secondary to Systemic Diseases
Nail Fold Abnormality
 • SLE
 • Scleroderma
 • Dermatomyositis
Koilonychia - Spoon-shaped
Nail Disorders secondary ... to Systemic Diseases ... Abnormality • SLE ... systemic disease ... Medications • Wilson's disease
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
polychondritis, Behcet's Disease ... ) • Rheumatic Diseases ... : IgG4-Related Disease ... erythematosus (SLE ... Differential #Diagnosis #rheumatology
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
and Platelet Disorders ... PT, aPTT(liver disease ... function test, ANA ... bypass), LFT (liver disease ... #Workup #hematology
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Causes of Hypocomplementemia ... Chain deposition disease ... autoimmune (RA, Sjogren's ... antiphospholipid syndrome ... #differential #hematology
Causes of Fatigue - Differential Diagnosis Algorithm
Endocrine
 • Hypo/Hyperthyroidism
 • Diabetes
 • Pituitary Insufficiency
 • Adrenal
Metabolic • Renal ... Neoplastic / Hematologic ... Arthritis • SLE ... Obstructive Pulmonary Disease ... Neurologic