17 results
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... found in 60% of cases ... Psittacosis, Bartonella, Syphilis ... Differential #Diagnosis #Dermatology ... #SkinRash
Skin Ulcers of the Lower Legs / Feet - Differential Diagnosis Algorithm
Physical:
• Pressure
• Trauma
• Radiation
Vascular:
• Arterial
Ulcers of the Lower Legs ... Tabes dorsalis (syphilis ... Ulcers #ulcerative #skinrash ... #dermatology #Differential ... #causes
Secondary Disseminated Syphilis

Case from my residency that @EstradaElJefe helped me publish in JGIM. One important finding
Secondary Disseminated Syphilis ... Case from my ... #Disseminated #Dermatology ... #Clinical #Photo ... #SkinRash #Alopecia
Kaposis Sarcoma: Darkly pigmented macules caused by this malignancy. Seen most commonly in
patients with HIV infection.

Charlie
pigmented macules caused ... patients with HIV ... Images #Clinical ... #Photo #Dermatology ... #SkinRash #Kaposis
Secondary Syphilis - Rash on Palms and Soles 
41ys, seen in our ED b/c of 20
- Rash on Palms ... present in 80% of cases ... #Rash #clinical ... #photo #dermatology ... #Palms #Soles #dermatology
Drug Reaction with Eosinophilia and Systemic Signs (DRESS Syndrome): Formerly known as drug hypersensitivity reaction, DRESS
represents
medication (in this case ... Images #Clinical ... #Dermatology #SkinRash ... #Eosinophilia #Legs ... #Photo #UCSDH
Secondary Syphilis Rash
Secondary syphilis is the most contagious of all the stages of this disease, and
Secondary Syphilis ... syphilis is the ... caused by other ... #Clinical #Photo ... #Dermatology
Eczematous Skin Rash - Differential Diagnosis Algorithm
Eczematous - Pruritic/Scaly/Erythematous lesions. Usually poorly demarcated
 • Atopic Dermatitis
Eczematous Skin Rash ... Usually on lower legs ... #Eczematous #SkinRash ... #dermatology #Differential ... #causes
Vibrio Vulnificus skin infection
Cirrhosis w/recent consumption of raw oysters w/rapidly evolving rash. 
Vibrio vulnificus part of
marine microbiota & causes ... 10% Crab, few cases ... #cellulitis #dermatology ... #legs #clinical ... #photo
Erythema Annulare Centrifugum (EAC),
This is erythema annulare centrifugum (EAC), one of the “figurate erythemas.” These lesions
trailing scale that lags ... Most cases are idiopathic ... Centrifugum #EAC #clinical ... #photo #dermatology ... #skinrash