dermatology quizzes

What's your diagnosis? (December 2017)
What's your diagnosis? (December 2017)A 50-year-old woman with a recent diagnosis of dermatomyositis went to her dermatologist to ask how to treat smooth nodules that had developed in groups on her knees and elbows. A few of the nodules had ulcerated and produced a chalky substance.
What's your diagnosis? (November 2017)
What's your diagnosis? (November 2017)A 22-year-old woman asked her doctor about a number of tiny smooth brown and black papules that had slowly developed across her cheeks over the past year. (Photo courtesy of ©VisualDx 2017)
Superficial spreading in lentigo maligna
Superficial spreading in lentigo malignaA 61-year-old white female with a past medical history of atrial fibrillation presents with a brown spot on her right ear of unknown duration. What wouldn’t you do during the first office visit?
Melanoma quiz:  Diagnosis, differential and black patches
Melanoma quiz: Diagnosis, differential and black patches71-year-old Caucasian woman presents with an asymptomatic 4 cm x 2.5 cm black patch.
Case study:  20 non-melanomas and now this mysterious lesion
Case study: 20 non-melanomas and now this mysterious lesionIn this case, the clinical diagnosis can be difficult as the features of the lesion overlap in this 90-year-old patient. What is the diagnosis?