37 results
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
- Differential Diagnosis ... - Hemolytic anemia ... Splenomegaly - CTD (SLE ... Associated - SLE ... #hematology #rheumatology
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
): SS, SC, SE, Sβ ... Agglutination - Cold ... cardiac valve, vasculitis ... #Algorithm #workup ... #hematology #testing
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
and Workup History ... test, ANA (e.g., SLE ... changes), high MCV anemia ... #Causes #Workup ... #hematology
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... Megakaryopoiesis • Aplastic Anemia ... Autoimmune • ITP • SLE ... HUS • DIC • Vasculitis ... #Hematology
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
→ Refer to hematology ... for workup, including ... , Vasculitides, ... IBD, Celiac disease ... #Algorithm #hematology
Aortitis - Differential Diagnosis Framework
Non-Infectious Aortitis:
 • Vasculitides: Giant Cell Arteritis (GCA), Takayasu's arteritis, Cogan's Syndrome,
- Differential Diagnosis ... ANCA associated vasculitis ... erythematosus (SLE ... #Differential #Diagnosis ... #rheumatology
Dyspnea - Differential Diagnosis Framework

Cardiovascular Causes of Dyspnea:
 • Myocardium:
	- Heart failure
	- CAD/ACS
	- Valvulopathy
 • Electrical:
	-
- Differential Diagnosis ... - Asthma - COPD ... Pulmonary HTN - Vasculitis ... Transverse myelitis • Hematology ... : - Anemia
Differential Diagnosis for Hemolytic Anemia
Intrinsic Causes:
 • Enzyme deficiencies ex. G6PD, pyruvate kinase 
 • Hemoglobinopathies
Differential Diagnosis ... for Hemolytic Anemia ... : • Liver disease ... • AIHA: warm, cold ... #hematology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Diagnostic Framework ... Extravascular Causes ... Autoimmune (AIHA)"Cold ... (e.g. primary cold ... #hematology #anemia
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
decades of life Causes ... Disorientation, vertigo Diagnostic ... #Urticaria #diagnosis ... #rheumatology # ... comparison #table