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Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... Maculopapular rash ... macules • Erythematous ... vasculitis (inflamed blood ... #dermatology #rash
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... Diagnosis Algorithm ... RA, Sjogren's, GPA ... cryoglobulins • Skin ... #Causes #dermatology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... mucositis - Rash ... disease, drug reactions ... Large Vessel: Blood ... • ANCA (Dx: GPA
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
disease, drug reactions ... pulses, bruits, or blood ... , mucositis • Rash ... MPO > PR3 60/ GPA ... tract, and often causes
Blood Transfusion Reactions

Immune Mediated:
 • Febrile Non-Hemolytic Transfusion Reaction (FNHTR): Most common immune reaction to transfusion.
maculopapular rash ... Post Transfusion Purpura ... Causes purpura & ... infections with skin ... RBCs (stored at 4C
Blood Product Transfusions One Pager Summary
Type and screen - determines blood type and detects in recipient
maculopapular rash ... Post Transfusion Purpura ... Causes purpura & ... infections with skin ... RBCs (stored at 4C
PALM RASHES 
Common features and patterns:
1.	Color:
o	Red or erythematous: Common in inflammatory or allergic reactions.
o	Purple or purpuric:
o Purple or purpuric ... such as small blood ... occur in chronic skin ... Seen in systemic causes ... Fungal Infections (Tinea