347 results
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Mnemonic NO cause ... found in 60% of cases ... Nodosum #Mnemonic #Causes ... Differential #Diagnosis #Dermatology
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Causes include : ... Pre-analytical cause ... Fll, FV, FVII, FIX ... aPTT #Prolonged #Causes ... #differential #hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
disorders, or other causes ... • Secondary Causes ... marrow disease - DIC ... Differential #Diagnosis #hematology ... #nonpalpable #dermatology
Causes of Arterial and Venous Thrombosis - Differential Diagnosis Framework

STRUCTURAL:
 - PFO: paradoxical emboli
 - Popliteal
Causes of Arterial ... artery aneurysm: Causes ... intravascular coagulation (DIC ... MAHA: TTP, HUS, DIC ... Diagnosis #clots #hematology
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal ... Pre-analytical cause ... Fll, FV, FVII, FIX ... aPTT #Prolonged #Causes ... #differential #hematology
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... • TTP/HUS • DIC ... Diagnosis #Algorithm #Causes ... #Hematology
Differential Diagnosis for Hemolytic Anemia
Intrinsic Causes:
 • Enzyme deficiencies ex. G6PD, pyruvate kinase 
 • Hemoglobinopathies
Anemia Intrinsic Causes ... elliptocytosis Extrinsic Causes ... Intravascular Causes ... MAHA: TTP, HUS, DIC ... classification #hematology
Causes of Diarrhea 
#Diarrhea #DDX
Causes of Diarrhea ... #Diarrhea #DDX
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
helmet cells DDX ... MAHA: TTP/HUS > DIC ... Treat primary cause ... Coagulation #diagnosis #causes ... treatment #management #hematology
Differential Algorithm for the Causes of thrombocytopenia 

#Diagnosis #Hematology #Thrombocytopenia #Causes #Differential
Algorithm for the Causes ... #Diagnosis #Hematology ... Thrombocytopenia #Causes