15 results
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
Petechial/Purpuric ... ) purpura occurs ... Nonpalpable purpura ... with petechiae/purpura ... #Purpuric #Rash
Causes of Purpura - Differential Diagnosis
Non-PalpabIe → Palpable
 • Thrombocytopenia (HIT, ITP/HUS), Coagulation defects (DIC, warfarin
Causes of Purpura ... - Differential ... BrighamChiefs #Purpura ... #nonpalpable #palpable ... #Causes #Differential
Causes of Purpura - Differential Diagnosis
Disruption in Vascular Integrity: 
 • Trauma, Infection, Vasculitis, Drug induced
Causes of Purpura ... - Differential ... C), Pigmented purpuric ... BrighamChiefs #Purpura ... #nonpalpable #palpable
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... PURPURA: Platelet ... Acute Infectious Purpura ... PURPURA: Vasculitis ... #nonpalpable #dermatology
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
purpura (16%) ... purpura • Vesicles ... overlying purpuric ... Henoch-Schönlein purpura ... • Goodpasture syndrome
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Crohn's disease Palpable ... purpura • Hypersensitivity ... Henoch Schönlein purpura ... Antiphospholipid-antibody syndrome ... #skin #rashes #differential
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis: • Purpura ... purpura: Strong ... purpura • Pauci ... purpura, joint ... purpura (lower
Algorithm - Approach to the differential diagnosis of the patient presenting with overt glomerular proteinuria. CMV
Approach to the differential ... hemolytic-uremic syndrome ... thrombocytopenic purpura ... skin (alopecia, purpura ... , palpable purpura
Bleeding manifestations 
Petechiae are small, flat, red, discrete areas of skin bleeding that are typically <2
areas of the body Purpura ... Purpura due to vasculitis ... is usually palpable ... Wet purpura is the ... #Petechiae #Purpura
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Involving the Skin - Differential ... Vessel: Petechiae, Palpable ... purpura, Hemorrhagic ... Disease • Cogan syndrome ... #rheumatology #differential