10 results
Vasculitis: In this instance, the vasculitic skin lesions were secondary to Haemophilus endocarditis.
Photo credit, Josh Fierer,
skin lesions were ... Goldberg, M.D. - UCSD ... Clinical #Photo #Dermatology ... #SkinRash #Vasculitis ... #Endocarditis #UCSDH
Acanthosis Nigricans: Velvety appearing, hyperpigmented skin. Associated with diabetes and a 
number of other disorders. Multiple
hyperpigmented skin ... number of other disorders ... Multiple skin tags ... Images #Clinical #Dermatology ... #SkinRash #Acanthosis
Pyoderma Gangrenosum: Autoimmune disorder resulting in a vasculitis which causes slowly progressive 
ulceration of the skin.
Gangrenosum: Autoimmune disorder ... resulting in a vasculitis ... ulceration of the skin ... Clinical #Photo #Dermatology ... #SkinRash #Pyoderma
Vascular Skin Lesions - Differential Diagnosis Algorithm
 - Petechiae < 0.2 cm diameter
 - Purpura 0.2
Vascular Skin Lesions ... - Differential ... discolorations of skin ... #SkinRash #dermatology ... #Differential #
Skin Ulcers of the Lower Legs / Feet - Differential Diagnosis Algorithm
Physical:
• Pressure
• Trauma
• Radiation
Vascular:
• Arterial
Skin Ulcers of the ... Legs / Feet - Differential ... insufficiency • Vasculitis ... Ulcers #ulcerative #skinrash ... #dermatology #Differential
Skin Ulcers by Etiology - Differential Diagnosis Algorithm
Physical:
 • Trauma
 • Pressure
 • Radiation
Vascular:
 • Arterial
Skin Ulcers by Etiology ... insufficiency • Vasculitis ... • Factitious disorder ... Ulcers #ulcerative #skinrash ... #dermatology #Differential
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... purple, hemorrhagic skin ... Vasculopathy #Purpura #Differential ... #Diagnosis #hematology ... #nonpalpable #dermatology
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Petechial Rash - Differential ... Infection - Vasculitis ... - Collagen disorders ... cryoglobulins • Skin ... Algorithm #Causes #dermatology
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
Cryoglobulins (Vasculitic ... lymphoproliferative disorder ... dehydrogenase • Positive ... younger pts) Differential ... hemolytic #anemia #hematology
Pathergy Summary Overview

What is pathergy?
Pathergy is an exaggerated skin injury occurring after minor trauma such as
Myeloproliferative disorders ... Pathergy test is positive ... Pathergy #diagnosis #differential ... allergy #immunology #dermatology ... #skin