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

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Nodosum - Mnemonic ... Lofgren's syndrome Ulcerative ... #Erythema #Nodosum ... #Differential #Diagnosis ... #Dermatology #SkinRash
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Erythema Nodosum ... Diagnosis Appearance ... thighs RARELY ulcerate ... Diagnosis #Dermatology ... #SkinRash #Clinical
Head and Neck Skin Ulcers - Differential Diagnosis Algorithm
Neoplastic:
 • Squamous cell carcinoma
 • Basal cell
- Differential Diagnosis ... Algorithm Neoplastic ... #Neck #Ulcers #ulcerative ... #skinrash #dermatology ... #Algorithm #causes
Genital Skin Ulcers - Differential Diagnosis Algorithm
Painful:
 • Herpes simplex
 • Haemophilus ducreyi (chancroid)
 • Behcet's
- Differential Diagnosis ... Algorithm Painful ... genitals #Ulcers #ulcerative ... #skinrash #dermatology ... #Algorithm #causes
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
Algorithm Reactive ... 24hrs • Erythema Nodosum ... #Reactive #SkinRash ... #Diagnosis #Algorithm ... #causes
Pyoderma Gangrenosum: Autoimmune disorder resulting in a vasculitis which causes slowly progressive 
ulceration of the skin.
vasculitis which causes ... progressive ulceration ... Images #Clinical ... #Photo #Dermatology ... #SkinRash #Pyoderma
Skin Ulcers of the Lower Legs / Feet - Differential Diagnosis Algorithm
Physical:
• Pressure
• Trauma
• Radiation
Vascular:
• Arterial
- Differential Diagnosis ... Algorithm Physical ... #Feet #Ulcers #ulcerative ... #skinrash #dermatology ... #Algorithm #causes
Skin Ulcers by Etiology - Differential Diagnosis Algorithm
Physical:
 • Trauma
 • Pressure
 • Radiation
Vascular:
 • Arterial
- Differential Diagnosis ... Algorithm Physical ... Cryptococcosis #Ulcers #ulcerative ... #skinrash #dermatology ... #Algorithm #causes
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
association • M > F Clinical ... more): Genital ulceration ... lesions, erythema nodosum ... Behcet syndrome (Clinical ... Crohn disease, ulcerative