53 results
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... purple, hemorrhagic skin ... DIC/TTP/HUS - Hemolytic ... Diagnosis #hematology ... #nonpalpable #dermatology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Diagnostic Framework ... thrombocytopenic purpura ... uremic syndrome ... Extravascular #Causes #differential ... #diagnosis #hematology
Algorithm for workup of thrombocytopenia based on observation of the peripheral blood film. 
TTP/HUS indicates thrombotic
thrombocytopenic purpura ... /hemolytic uremic ... syndrome. ... thrombocytopenia, Hematology ... #Differential #
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
with devastating differential ... in vasculitic diseases ... secondary to inflammation ... disseminated gonococcal disease ... #Diagnosis #Dermatology
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Palpable purpura ... Antiphospholipid-antibody syndrome ... Sarcoidosis #dermatology ... #rashes #differential ... #diagnosis #rheumatology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
reticularis Differential ... Diagnosis: Vasculitis ... • Goodpasture syndrome ... Polyangiitis #GPA #dermatology ... #rash #diagnosis
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Leukocytoclastic Vasculitis Secondary ... Petechiae, Palpable purpura ... Vasculitis: • Behcet Disease ... • Cogan syndrome ... #dermatology #rheumatology
Petechiae/Purpura - Diagnostic Algorithm. Pathophysiology: 1) Represent the passage of erythrocytes from the intravascular to extravascular
Petechiae/Purpura ... Pathophysiology: ... of primary or secondary ... #Dermatology #Rash ... Palpable #Algorithm #Differential
Pruritus - Generalized Differential Diagnosis Algorithm - Systemic and Primary Causes
== Primary Skin Lesions ==
Macules /
Diagnosis Algorithm ... Myelodisplastic syndrome ... Pruritus #primary #secondary ... #generalized #dermatology ... Diagnosis #Algorithm
Causes of Thrombocytosis - Differential Diagnosis
Secondary Thrombocytosis (a.k.a Reactive Thrombocytosis):
 • Acute infection
 • Solid organ
Thrombocytosis - Differential ... Diagnosis Secondary ... iron deficiency, hemolysis ... Myelodysplastic syndrome ... #hematology #secondary