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DermDx

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Derm Dx: Fine, dry scales on the trunk and extremities

An 11-year-old girl presented to the dermatology clinic complaining of “dry skin” on her shins. The condition had been present since early childhood, but its appearance had not bothered the girl until recently. Physical examination revealed fine, dry, “pasted-on” scales and follicular plugging (Figure 1) on much of her trunk and extremities. The lesions were…

Derm Dx: Blisters, blotches and burning in a 42-year-old woman

A 42-year-old woman with herpes simplex virus (HSV) 1 presented with a five-year history of monthly recurring oozing plaques and blisters on her face, hands and forearms.The eruption was preceded by a burning sensation, and the lesions always appeared at the same locations. A similar eruption had occurred 12 years earlier but abated after a…

Derm Dx: Pruritic rashes that run in the family

A 54-year-old woman presented with a 26-year history of intermittent, malodorous, pruritic skin lesions. Several of her relatives have experienced similar rashes. Past treatments have included oral prednisone, topical steroids, chronic oral doxycycline, and short courses of amoxicillin, cephalexin and cefuroxime, all of which temporarily improved the condition. Physical examination revealed erythematous eroded scaly papules…

Derm Dx: Reticulated erythema on the lumbar back

A 36-year-old woman presented for evaluation of a rash on her lower back and bilateral flanks. She has a history of interstitial cystitis and has had more than 15 surgeries. Most recently, she had a nerve stimulator implanted three weeks prior to presentation. The patient reported no complications from the surgery and stated she was…

Derm Dx: A 32-year-old man with multiple itchy, malodorous papules

A 32-year-old man presents with multiple rough, crusted, itchy, malodorous skin papules on the chest, back and forehead.Further examination reveals flat wart-like papules on the dorsa of the feet and hands. The patient’s nails are chipped and have longitudinal ridges. Family history is not available, as the patient was adopted as a child.What’s your diagnosis?Submit…

Derm Dx: Unexplained blisters, primarily on the hands and feet, develop into mild ulcerations and heal without scarring

A child presents with recurrent unexplained blister formation, primarily on the hands and feet that develop into mild ulcerations and heal without scarring. Smaller erosions and vesicles are present on the elbows, arms and shoulders, and the patient has lost several fingernails and toenails. Family history is negative for psoriasis and atopy. What’s your diagnosis?…

Derm Dx: Widespread umbilicated vesicles

Clinical DescriptionA widespread rash that begins as clusters of umbilicated vesicles and spreads over a period of seven to 10 days, sometimes accompanied by fever, malaise and lymphadenopathy. Submit your answer and read the full explanation below. If you like this activity or have a suggestion, tell us about it in the comment box at…

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