13 results
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Causes of Erythema ... Drugs (antibiotics ... HepB, HepC Bacterial ... Psittacosis, Bartonella, Syphilis ... Differential #Diagnosis #Dermatology
Secondary Disseminated Syphilis

Case from my residency that @EstradaElJefe helped me publish in JGIM. One important finding
Case from my ... @EstradaElJefe helped ... important finding here ... #Disseminated #Dermatology ... #Clinical #Photo
Herpes Zoster: Herpes virus mediated infection that occurred in this patient receiving chemotherapy 
for an underlying
virus mediated ... vessicles in this case ... superimposed bacterial ... Images #Clinical #Photo ... #Dermatology #SkinRash
Skin Ulcers by Etiology - Differential Diagnosis Algorithm
Physical:
 • Trauma
 • Pressure
 • Radiation
Vascular:
 • Arterial
Tabes dorsalis (syphilis ... Leishmaniasis - Viral - Herpes ... simplex - Bacterial ... ulcerative #skinrash #dermatology ... Diagnosis #Algorithm #causes
Syphilis Clinical Findings - Chancre and Characteristic Rash
A: Syphilitic chancre with a clean, painless base and
plaque on the palm ... D: Gram bacteria ... #photo #chancre ... #palms #soles # ... rash #dermatology
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
Genital Lesions - Differential Diagnosis Algorithm
Elevated - Vesicles:
 • Herpes simplex
Elevated - Papules / Plaques -
Vesicles: • Herpes ... Human papilloma virus ... • Secondary Syphilis ... #skinlesions #dermatology ... Diagnosis #Algorithm #causes
Janeway Lesion: Flat, painless, erythematous lesions seen on the palm of this patient's hand. While
frequently associated
lesions seen on the palm ... associated with bacterial ... endocarditis, in this case ... Photo credit, Josh ... #Dermatology #SkinRash
Causes of Erythema Nodosum
Common
 - Idiopathic (up to 55 percent)
 - Infections: streptococcal pharyngitis (28 to
Causes of Erythema ... to 10 percent): antibiotics ... - Viral: herpes ... - Bacterial ... Bartonella spp., syphilis
Secondary Syphilis Rash
Secondary syphilis is the most contagious of all the stages of this disease, and
Treponema pallidum bacterial ... spots both on the palms ... resembling rashes caused ... Diagnosis #Clinical #Photo ... #Dermatology