Bernard A Cohen, MD, is the section editor for Dermcase and professor of pediatrics and dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
Just a little birthmark?
You are asked to evaluate a healthy 1.5-day-old girl who has a congenital red patch with coarse telangiectasias and a surrounding ring of pallor on the right shoulder. What's your diagnosis?
Disseminated erythema migrans as a result of Lyme disease
A 17-year-old male patient presents with multiple lesions developed on his trunk, face, and extremities that had previously been solitary, red expanding lesion on his right arm at the site of a tick bite that occurred during a hike.
Balancing the scales
Tinea incognito is a dermatophyte infection that has been altered by use of topical or systemic corticosteroids. It lacks the classic features of a ringworm infection due to corticosteroid suppression of inflammation and altered local immune response.
Linear rash leaves your patient itching
A 9-year-old boy has developed an itchy vesicular rash on his left leg that has spread to his other leg and to both arms and hands. What is the diagnosis?
Weeks of weakness, then reddish bumps on prominences
A boy with a history of skin eruption, intermittent fever, and generalized weakness now has red bumps on the bony prominences of his hands, elbows, and knees. What's the diagnosis?
Pediatric dermatology: What's your Dx?
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