12 results
Skin Ulcers of the Lower Legs / Feet - Differential Diagnosis Algorithm
Physical:
• Pressure
• Trauma
• Radiation
Vascular:
• Arterial
insufficiency • Vasculitis ... Metabolic: • Pyoderma gangrenosum ... Ulcers #ulcerative #skinrash ... #dermatology #Differential ... #causes
Pyoderma Gangrenosum: Autoimmune disorder resulting in a vasculitis which causes slowly progressive 
ulceration of the skin.
Pyoderma Gangrenosum ... vasculitis which ... causes slowly progressive ... Images #Clinical #Photo ... #Dermatology #SkinRash
Head and Neck Skin Ulcers - Differential Diagnosis Algorithm
Neoplastic:
 • Squamous cell carcinoma
 • Basal cell
Diagnosis Algorithm ... : • Pyoderma gangrenosum ... Ulcers #ulcerative #skinrash ... #dermatology #Differential ... #causes
Skin Ulcers by Etiology - Differential Diagnosis Algorithm
Physical:
 • Trauma
 • Pressure
 • Radiation
Vascular:
 • Arterial
insufficiency • Vasculitis ... : • Pyoderma gangrenosum ... Ulcers #ulcerative #skinrash ... #dermatology #Differential ... #causes
Vascular Skin Lesions - Differential Diagnosis Algorithm
 - Petechiae < 0.2 cm diameter
 - Purpura 0.2
Skin Lesions - Differential ... Diagnosis Algorithm ... #SkinRash #dermatology ... #Differential # ... #causes
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... Varicella - Group A ... • Ig A vasculitis ... reactions • Erythema gangrenosum ... Vasculopathy #Purpura #Differential
Petechiae/Purpura - Diagnostic Algorithm. Pathophysiology: 1) Represent the passage of erythrocytes from the intravascular to extravascular
Purpura - Diagnostic Algorithm ... this may suggest a ... commonly renal and pulmonary ... #Diagnosis #Dermatology ... #Differential #
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
pathophysiologic causes ... With associated pulmonary ... Glomerulonephritis #Vasculitis ... #differential # ... diagnosis #algorithm
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... resemble pyoderma gangrenosum ... reticularis Differential ... blood vessels with a ... rash #diagnosis #rheumatology
Papulosquamous Skin Rash - Differential Diagnosis Algorithm
Erythrematous or violaceous papules & plaques with overlying scale
 •
Diagnosis Algorithm ... trunk, begins with a ... Papulosquamous #SkinRash ... #dermatology #Differential ... #causes