12 results
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
with devastating differential ... , the differential ... , disseminated intravascular ... #Diagnosis #Dermatology ... #Differential
Petechiae/Purpura - Diagnostic Algorithm. Pathophysiology: 1) Represent the passage of erythrocytes from the intravascular to extravascular
Petechiae/Purpura ... erythrocytes from the intravascular ... vascular integrity (trauma ... #Diagnosis #Dermatology ... #Algorithm #Differential
Causes of Purpura - Differential Diagnosis
Non-PalpabIe → Palpable
 • Thrombocytopenia (HIT, ITP/HUS), Coagulation defects (DIC, warfarin
Causes of Purpura - Differential ... Thrombocytopenia ... warfarin necrosis), Trauma ... BrighamChiefs #Purpura #nonpalpable ... #Differential #
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Rash - Differential ... hemostasis: - Thrombocytopenia ... integrity: - Trauma ... #Differential # ... Algorithm #Causes #dermatology
Causes of Purpura - Differential Diagnosis
Disruption in Vascular Integrity: 
 • Trauma, Infection, Vasculitis, Drug induced
Integrity: • Trauma ... Primary hemostasis: Thrombocytopenia ... BrighamChiefs #Purpura #nonpalpable ... #palpable #Causes ... #Differential #
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Causes Intravascular ... • Mechanical Trauma ... microangiopathy: Thrombotic thrombocytopenic ... #Causes #differential ... #diagnosis #hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... inflammation • Thrombocytopenia ... Primary Causes: - Thrombocytopenia ... Solar purpura - Trauma ... #nonpalpable #dermatology
Bleeding manifestations 
Petechiae are small, flat, red, discrete areas of skin bleeding that are typically <2
non-blanching, nonpalpable ... vasculitis is usually palpable ... individuals with thrombocytopenia ... of blood in the extravascular ... VWF:RCo/VWF:Ag (differentiate
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
Disseminated Intravascular ... Recent history of trauma ... Manifestations of DIC: • Petechiae ... • Purpura • Palpable ... #Disseminated #Intravascular
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Skin Findings: • Petechiae ... , Palpable purpura ... sensation or pain: • Petechiae ... • Palpable purpura ... reticularis Differential