29 results
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
Reactive Skin Rash ... & plaques that are ... vesicles &/or bullae ... #Reactive #SkinRash ... Diagnosis #Algorithm #causes
Primary Adrenal Insufficiency
Addison's Disease - Damage of the adrenal glands with lack of cortisol, androgens and
aldosterone Causes ... : Most Common Causes ... : • Autoimmune ... patches on the skin ... sodium, potassium, AM
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... Rash - Differential ... Abnormalities in primary ... : - Autoimmune ... cryoglobulins • Skin
Systemic Sclerosis (Scleroderma)
Multi-system autoimmune disease characterized by vasculopathy and progressive fibrosis of skin and internal organs
3
Multi-system autoimmune ... proximally to arms ... Symptoms: • Cardiac ... Hepatic: PBC (primary ... Scleroderma #SSc #rheumatology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Extravascular Causes ... usually IgM) (e.g. primary ... disease, Copper and ... #differential # ... diagnosis #hematology
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
centrifugum • A chronic skin ... gyratum repens • A skin ... induratum • A chronic skin ... • Causes are multiple ... comparison #table #differential
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... Maculopapular rash ... • Hemorrhagic Bullae ... reticularis Differential ... #diagnosis #rheumatology
Hemoptysis - Differential Diagnosis Framework
Massive Hemoptysis: >150-300 mL in 24h
Airway disease: 
 • Bronchitis, Bronchiectasis, Malignancy
Hemoptysis - Differential ... • Malignancy: Primary ... Kaposi's sarcoma • Rheumatologic ... / Autoimmune: ANCA-Assoc ... Diagnosis #pulmonary #causes
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
Positive ANAAutoimmune ... context of other symptoms ... Hepatitis, Primary ... #patterns #rheumatology ... #diagnosis #differential
Bronchiectasis - Permanent dilation of an airway
WHAT CAN YOU SEE ON CT?
1) Lack of tapering of
Permanent dilation of an ... Cystic Fibrosis, Primary ... Obstruction 6) Rheumatologic ... /Autoimmune diseae ... pulmonary #diagnosis #differential