21 results
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
Reactive Skin Rash - Differential ... lasts <24hrs • Erythema ... nodules on shins • Erythema ... vesicles &/or bullae ... #Reactive #SkinRash
Necrotizing Fasciitis: Note the extensive edema, erythema, bullae formation, and necrosis in this patient's thigh. At
extensive edema, erythema ... , bullae formation ... Images #Clinical #Photo ... #Dermatology #SkinRash ... Necrotizing #Fasciitis #Bullae
Erythema Nodosum: In this case, E. Nodosum has occured secondary to 
Streptococcal infection.
Photo credit, Josh Fierer,
Erythema Nodosum ... Photo credit, Josh ... #Dermatology #SkinRash ... #Erythema #ENodosum ... #Photo #UCSDH
Erythema Multiforme: skin eruption secondary to allergic reaction from an antibiotic.

Charlie Goldberg, M.D. - UCSD Catalog
Erythema Multiforme ... #Dermatology #SkinRash ... #Erythema #Multiforme ... #Trunk #Back #Photo
Erythema Annulare Centrifugum (EAC),
This is erythema annulare centrifugum (EAC), one of the “figurate erythemas.” These lesions
Erythema Annulare ... EAC), This is erythema ... the “figurate erythemas ... EAC #clinical #photo ... #dermatology #skinrash
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Erythema Nodosum ... - Causes and Differential ... healing process) #Erythema ... Nodosum #Causes #Differential ... #Dermatology #SkinRash
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Giardiasis #Erythema ... Mnemonic #Causes #Differential ... #Dermatology #SkinRash
Clinical Presentation of Conditions That Mimic Cellulitis and True Cellulitis 

 - Deep Vein Thrombosis
 -
- Hematoma - Erythema ... Diagnosis #Clinical #Photo ... Cellulitis #Mimics #Differential
Vesiculobullous Skin Rash - Differential Diagnosis Algorithm
Vesicles Fragile/EasiIy Ruptured - Intraepidermal blisters, possibly crusts/erosions
 - Inflammatory
Vesiculobullous Skin Rash - Differential ... • Diabetic bullae ... Vesiculobullous #SkinRash ... #dermatology #Differential
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
Involving the Skin - Differential ... purpura, Hemorrhagic bullae ... vasculitis • Erythema ... #rheumatology #differential