23 results
Erythema Multiforme: skin eruption secondary to allergic reaction from an antibiotic.

Charlie Goldberg, M.D. - UCSD Catalog
Erythema Multiforme ... Goldberg, M.D. - UCSD ... #Dermatology #SkinRash ... #Erythema #Multiforme ... #Back #Photo #UCSDH
Erythema Nodosum: In this case, E. Nodosum has occured secondary to 
Streptococcal infection.
Photo credit, Josh Fierer,
Erythema Nodosum ... Goldberg, M.D. - UCSD ... #Dermatology #SkinRash ... #Erythema #ENodosum ... #Photo #UCSDH
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Lofgren's syndrome Ulcerative ... Giardiasis #Erythema ... Mnemonic #Causes #Differential ... #Dermatology #SkinRash
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Erythema Nodosum ... - Causes and Differential ... thighs RARELY ulcerate ... healing process) #Erythema ... #Dermatology #SkinRash
Necrotizing Fasciitis: Note the extensive edema, erythema, bullae formation, and necrosis in this patient's thigh. At
extensive edema, erythema ... Goldberg, M.D. - UCSD ... #Dermatology #SkinRash ... Fasciitis #Bullae #UCSDH
Head and Neck Skin Ulcers - Differential Diagnosis Algorithm
Neoplastic:
 • Squamous cell carcinoma
 • Basal cell
Skin Ulcers - Differential ... #Neck #Ulcers #ulcerative ... #skinrash #dermatology ... #Differential #
Genital Skin Ulcers - Differential Diagnosis Algorithm
Painful:
 • Herpes simplex
 • Haemophilus ducreyi (chancroid)
 • Behcet's
Skin Ulcers - Differential ... genitals #Ulcers #ulcerative ... #skinrash #dermatology ... #Differential #
Pyoderma Gangrenosum: Autoimmune disorder resulting in a vasculitis which causes slowly progressive 
ulceration of the skin.
progressive ulceration ... Goldberg, M.D. - UCSD ... #Dermatology #SkinRash ... #Gangrenosum #UCSDH
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
Reactive Skin Rash - Differential ... lasts <24hrs • Erythema ... nodules on shins • Erythema ... #Reactive #SkinRash ... #dermatology #Differential
Skin Ulcers of the Lower Legs / Feet - Differential Diagnosis Algorithm
Physical:
• Pressure
• Trauma
• Radiation
Vascular:
• Arterial
Legs / Feet - Differential ... #Feet #Ulcers #ulcerative ... #skinrash #dermatology ... #Differential #