11 results
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Diagnosis Algorithm ... • Extremes of age ... cryoglobulins • Skin ... #Petechiae #Rash ... Algorithm #Causes #dermatology
Maculopapular - Diagnostic Algorithm
Pathophysiology:
- Catch-all term with a wide range of potential pathophysiologic mechanisms and causative
Maculopapular - ... Diagnostic Algorithm ... erythroderma, petechiae ... sulfa-drug - Skin ... #Dermatology #Rash
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Findings: • Petechiae ... lesions (9.4%) • Maculopapular ... rash (6.7%) • ... vasculitis (inflamed blood ... #rash #diagnosis
Pigmented Purpuric Dermatoses (PPD) - Capillaritis

Group of chronic, benign, cutaneous eruptions characterized by the presence of
the presence of petechiae ... which allow red blood ... brown tint of the rash ... #differential #diagnosis ... #dermatology
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 ... vesicles, pustules, maculopapular
Leukemias Overview: ALL, CML, AML, APML, CLL

Acute leukemias > 20% blasts in the peripheral blood smear
the peripheral blood ... Significant ↓ PLT: Petechiae ... CLL -> Invade Skin ... #Leukemia #Hematology ... #Oncology #Diagnosis
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
mucositis - Rash ... Takayasu: - Age ... temporal artery - Age ... pulses, bruis, or blood ... Large Vessel: Blood
Acute Generalized Exanthematous Pustulosis (AGEP)

AGEP is largely a clinical diagnosis based on classical skin findings in
a clinical diagnosis ... based on classical skin ... Elevated white blood ... Exanthematous #Pustulosis #Dermatology ... #diagnosis
Myelodysplastic Syndromes (MDS)

What?
Myelodysplastic syndromes are a group of disorders caused by blood cells that are poorly
• Mean age at Dx ... just beneath the skin ... caused by bleeding (petechiae ... Myelodysplastic #Syndromes #diagnosis ... #hematology #oncology
Blood Transfusion Reactions

Immune Mediated:
 • Febrile Non-Hemolytic Transfusion Reaction (FNHTR): Most common immune reaction to transfusion.
/sx urticaria, maculopapular ... rash, pruritis, ... infections with skin ... #Transfusion #diagnosis ... #management #hematology