22 results
Erythema Nodosum: In this case, E. Nodosum has occured secondary to 
Streptococcal infection.
Photo credit, Josh Fierer,
Erythema Nodosum ... Nodosum has occured ... SkinRash #Erythema #ENodosum
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema Nodosum ... #Erythema #Nodosum
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Erythema Nodosum ... #Erythema #Nodosum
Causes of Erythema Nodosum
Common
 - Idiopathic (up to 55 percent)
 - Infections: streptococcal pharyngitis (28 to
Causes of Erythema Nodosum ... #Erythema #Nodosum
Löfgren Syndrome in Sarcoidosis
 • Hilar Lymphadenopathy 
 • Acute Polyarthritis (usually ankles)
 • Erythema Nodosum
joo
) • Erythema Nodosum
Red Leg - Cellulitis Mimickers
 - Unilateral
     • Contact Dermatitis
• Erythema Nodosum
Dermatologic Extraintestinal Manifestations in IBD - IBD Algorithm

Erythema Nodosum
Pyoderma Gangrenosum
Metastatic Crohn's Disease
Sweet Syndrome
EBA

Dr. Wade Billings @wabillin

#Dermatologic
Algorithm Erythema Nodosum
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
24hrs • Erythema Nodosum
Causes of Pseudocellulitis - Differential Diagnosis Framework for Cellulitis Mimics

Cellulitis: Deep skin and subcutaneous fat infection

Pseudo
bursitis • Erythema nodosum ... Polyarthritis nodosum
Sarcoidosis
Stage 1 - Bilateral LAD without involvement of lung parenchyma
Stage 2 - Bilateral LAD with involvement
adenopathy, erythema nodosum