16 results
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... Maculopapular rash ... Polyangiitis #GPA #dermatology ... #rash #diagnosis ... #rheumatology
Causes of Polycythemia (Erythrocytosis) - Differential Diagnosis Algorithm
Relative - Normal RBC Mass / Decreased Plasma Volume
Causes of Polycythemia ... Cyanosis without Pulmonary ... Apnea • Chronic Pulmonary ... Diagnosis #Algorithm #Causes ... #Hematology
Erythrocytosis - Polycythemia Differential Diagnosis Algorithm

Elevated Hemoglobin:
 • Males: Hb > 16.5 g/dL/HCT ≥ 49%
 •
Polycythemia - Acquired Causes ... Hypoxia-driven: Cardiac/pulmonary ... disease, Smoking ... Diagnosis #Algorithm #hematology
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
early localized disease ... called "Bazin's disease ... so-called fifth disease ... Erythemas #comparison #table ... differential #diagnosis #dermatology
Cryofibrinogenemia Summary

Cryofibrinogenemia Epidemiology:
 • 40-70 years with a modest female predominance

Cryofibrinogenemia:
 • The precipitation of a
with autoimmune diseases ... thrombophlebitis, pulmonary ... cryoglobulins • Negative causes ... Cryofibrinogenemia #diagnosis #rheumatology ... #hematology
ANTI-MDA5 DERMATOMYOSITIS

Cutaneous manifestations:
• Periorbital heliotrope (blue-purple) rash with edema
• Erythematous rash on the face, or the
(blue-purple) rash ... • Erythematous rash ... severity of the disease ... Dermatomyositis #rheumatology ... #dermatology #diagnosis
TRALI vs TACO - Transfusion Reactions
TRALI:
 • Epidemiology: 0.1% of transfused patientsl
 • Risk factors: Critical
without other cause ... , and CXR with pulmonary ... Transfusion #Reactions #hematology ... diagnosis #comparison #table
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
NPSLE rare, Malar rash ... Discontinuation of causal ... Evolution: Chronic disease ... sle #comparison #table ... #rheumatology #
Erythema Ab Igne on Physical Exam

Erythema ab igne (EAI) is a skin reaction caused by chronic
skin reaction caused ... #Igne #AbIgne #PhysicalExam ... #clinical #video ... #skin #dermatology ... #rash
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
progressing GN • New pulmonary ... glomerulonephritis and/or pulmonary ... tract, and often causes ... mucositis - Rash ... differential #diagnosis #rheumatology