13 results
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Rash - Differential ... • Extremes of age ... : • Palpable Rash ... test • Serology ... cryoglobulins • Skin
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... Maculopapular rash ... reticularis Differential ... vasculitis (inflamed blood ... #rash #diagnosis
Pigmented Purpuric Dermatoses (PPD) - Capillaritis

Group of chronic, benign, cutaneous eruptions characterized by the presence of
Extravasation of blood ... which allow red blood ... - This iron causes ... brown tint of the rash ... Dermatoses #Dermatosis #differential
ANTI-MDA5 DERMATOMYOSITIS

Cutaneous manifestations:
• Periorbital heliotrope (blue-purple) rash with edema
• Erythematous rash on the face, or the
(blue-purple) rash ... • Erythematous rash ... ulcerations • Skin ... onset [33-74%] • Blood ... tests: Elevated
Acute Generalized Exanthematous Pustulosis (AGEP)

AGEP is largely a clinical diagnosis based on classical skin findings in
) and pustular rash ... Elevated white blood ... - Rash improvement ... The rash can be ... Typically, the rash
Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS)
Definition: 
 • Severe adverse drug reaction, characterized by
characterized by extensive skin ... rash in association ... Edema in 70% of cases ... Skin involvement ... Resolution > 15 days Differentials
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
tract, and often causes ... mucositis - Rash ... Takayasu: - Age ... Large Vessel: Blood ... retinopathy Lab Tests
Blood Product Transfusions One Pager Summary
Type and screen - determines blood type and detects in recipient
indirect Coombs test ... maculopapular rash ... infections with skin ... Transfusions #diagnosis #management ... #hematology #reactions
Blood Transfusion Reactions

Immune Mediated:
 • Febrile Non-Hemolytic Transfusion Reaction (FNHTR): Most common immune reaction to transfusion.
maculopapular rash ... Causes purpura & ... infections with skin ... Transfusion #diagnosis #management ... #hematology #reactions
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
pulses, bruits, or blood ... Takayasu: • Age ... temporal artery • Age ... , mucositis • Rash ... tract, and often causes