11 results
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Rash - Differential ... : • Palpable Rash ... • Non-Palpable Rash ... test • Serology ... cryoglobulins • Skin
ANTI-MDA5 DERMATOMYOSITIS

Cutaneous manifestations:
• Periorbital heliotrope (blue-purple) rash with edema
• Erythematous rash on the face, or the
(blue-purple) rash ... • Erythematous rash ... onset [33-74%] • Blood ... tests: Elevated ... #AntiMDA5 #Dermatomyositis
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
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 ... pulses, bruis, or blood ... 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,
Vasculitis - Differential ... pulses, bruits, or blood ... , mucositis • Rash ... tract, and often causes ... #Diagnosis #Rheumatology
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
on sun-damaged skin ... honey-colored crusts ... - Trunk - Red, blood-filled ... ; pruritis #dermatology ... #rash #differential