191 results
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
GPA causes disease ... Rarely dominate the clinical ... Bullae/Blisters • Ulceration ... which may resemble pyoderma ... reticularis Differential
Head and Neck Skin Ulcers - Differential Diagnosis Algorithm
Neoplastic:
 • Squamous cell carcinoma
 • Basal cell
Skin Ulcers - Differential ... Metabolic: • Pyoderma ... #Neck #Ulcers #ulcerative ... #dermatology #Differential ... Diagnosis #Algorithm #causes
Skin Ulcers of the Lower Legs / Feet - Differential Diagnosis Algorithm
Physical:
• Pressure
• Trauma
• Radiation
Vascular:
• Arterial
Legs / Feet - Differential ... Metabolic: • Pyoderma ... #Feet #Ulcers #ulcerative ... #dermatology #Differential ... Diagnosis #Algorithm #causes
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Mnemonic NO cause ... Lofgren's syndrome Ulcerative ... Nodosum #Mnemonic #Causes ... #Differential #
Pyoderma Gangrenosum: Autoimmune disorder resulting in a vasculitis which causes slowly progressive 
ulceration of the skin.
Pyoderma Gangrenosum ... vasculitis which causes ... progressive ulceration ... UCSD Catalog of Clinical ... Images #Clinical
Skin Ulcers by Etiology - Differential Diagnosis Algorithm
Physical:
 • Trauma
 • Pressure
 • Radiation
Vascular:
 • Arterial
by Etiology - Differential ... Metabolic: • Pyoderma ... Cryptococcosis #Ulcers #ulcerative ... #dermatology #Differential ... Diagnosis #Algorithm #causes
Ulcerative Blastomycosis Skin Lesion
57 asymptomatic M from Indiana nonpruritic, painless, progressive skin lesion lower back x
Ulcerative Blastomycosis ... sharp borders) & ulcerative ... heaped up borders); differential ... squamous cell ca, pyoderma ... #dermatology #clinical
Causes of Nail Clubbing - Mnemonic 
Cyanotic Heart Disease, Cystic Fibrosis
Lung Cancer, Lung abscess 
Ulcerative Colitis
Causes of Nail Clubbing ... Lung abscess Ulcerative ... Nails #Mnemonic #Differential ... #Causes #Diagnosis
Pyoderma Gangrenosum

A 44-year-old man with a history of ulcerative colitis presented with a new non-healing wound
Pyoderma Gangrenosum ... with a history of ulcerative ... PyodermaGangrenosum #Clinical ... #Photo #Ulceration
Pyoderma Gangrenosum in Ulcerative Colitis- ...left chest (Panel A) and leg (Panel B). The physical examination
Pyoderma Gangrenosum ... in Ulcerative Colitis ... is an ulcerating ... #clinical #photo ... #NEJM #pyoderma