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Dermatologist

Persistent plaque with severe intermittent pruritus

By Craig G. Burkhart, MD, MPH January 07, 2010

Intermittent itching accompanies a persistent leg plaque.

Reminders of sun exposure

Laura Conley and Robert L. Buka, MD January 07, 2010

Sun exposure is the common link between these two conditions. Can you tell them apart?

Offensive odor emanating from tongue plaque

Robert L. Buka, MD December 04, 2009

The patient is concerned about a recent increase in his foul-smelling tongue discoloration.

Acne: Choosing the best treatments

Amy J. McMichael, MD, John Hancox, MD, Rachel Careccia, MD, and Kimberly Cayce, MD December 03, 2009

The disfiguring lesions of acne vulgaris can have a severe psychological impact. Fortunately, clinicians now have a broad range of therapeutic options.

A pair of generalized red rashes

Noah S. Scheinfeld, MD, JD December 03, 2009

Two men present with red rashes—one started on the back and spread to the upper arms, and the other was limited to the chest.

Melanoma: Errors lead to missed diagnosed

By Ann W. Latner, JD November 18, 2009

After referring his patient to a dermatologist to have a mole looked at, the clinician considered the case resolved. Not so fast.

Enlarging vesicular peeling of the palms

November 04, 2009

Peeling originating on the fingertips progresses to the palms of an African-American teenager following a 10-day course of ciprofloxacin.

Facial plaques in aging men

Noah S. Scheinfeld, MD, JD November 03, 2009

Two aging men develop similar-appearing asymptomatic facial plaques

Acute paronychia following cuticle injury

Question by Maria Dellaplain and answered by Philip R. Cohen, MD October 11, 2009

Five months ago, a teenager suffered an injured cuticle while trimming his toenail. The lesion oozes and bleeds after the patient wears shoes, and the surrounding area is very tender and warm. What diagnosis and treatment should I consider?

Evaluation for proximal muscle weakness and rash

Question by Linda Schwab and answered by Philip R. Cohen, MD October 11, 2009

What is the differential diagnosis for a formerly active and healthy 70-year-old woman with worsening proximal weakness, torticollis, and a widespread raised red rash across her cheeks bilaterally?

Hair loss in discrete areas

Noah S. Scheinfeld, MD, JD October 05, 2009

A 40-year-old woman and a 3-year-old boy experience similar patterns of hair loss—one of sudden onset and the other present at birth.

Bilateral pruritic papules on a woman's axillae

Natalia Rompoti, MD, Deborah J. Yang, MD, and Sylvia Hsu, MD September 29, 2009

Skin-colored papules develop on the axillae of an African-American woman.

Linear serpiginous eruptions on the extremities

Carina A. Wasko, MD, and Sylvia Hsu, MD September 28, 2009

A 12-year-old African-American male presented with a two-week history of pruritic linear scaling patches on his feet, legs, and arms after walking barefoot around his backyard.

Skin fusion on the fingers and toes of an adolescent girl

Craig G. Burkhart, MD, MPH September 25, 2009

A 12-year-old white girl seeks treatment for trauma-induced blistering and scarring that had led to fusion of the skin of her fingers and toes. There was no family history of blistering disorders or nail dystrophy.

Similar-appearing vesicles

Sean D. Doherty, MD September 24, 2009

Two women, the first bedridden with high fever and the second otherwise healthy, present with a vesicular rash.

Solar lentigo and lentigo maligna melanoma: itchless, pigmented macules

By Laura Conley, MD, and Robert L. Buka, MD September 01, 2009

Can you distinguish between these two facial lesions with similar characteristics?

Months-long facial rash with constant burning sensation

Craig G. Burkhart, MD, MPH August 24, 2009

An asthmatic woman experiences a recalcitrant burning facial rash that spares the lips.

Preventing recurrent boils

Question by Cecelia Clarke, NP-C, Smithfield, Va.; answered by Philip R. Cohen, MD August 17, 2009

Is there a way to reduce or eliminate frequent episodes of boils?

Can we expect a future decrease in patients with shingles?

Asked by Tush Arthur, PA-C, Florence, Ky., answered by Philip R. Cohen, MD August 09, 2009

Will the varicella vaccine lead to a significant reduction in the incidence of shingles (herpes zoster) in future generations? Since the vaccine does not actually cause the virus to go dormant....

Differentiating cutaneous dells

Noah S. Scheinfeld, MD, JD August 07, 2009

Two men present with cutaneous heel lesions. Similar growths appear on the patients' hands as well.

Scaly erythematous patches following
a throat infection

Deborah J. Yang, MD August 03, 2009

A girl develops a mildly pruritic rash on her face, scalp, chest, back, arms, and legs.

Perinasal papules

Thomas Berk and Noah S. Scheinfeld, MD, JD July 07, 2009

A 42-year-old man presented to the dermatology clinic complaining of a white-yellow papule that he had first noticed on his nose about three years ago. Meanwhile, a 55-year-old man complained of small, soft, yellow papules on his nose and face. Test your skills by indentifying these lesions.