Featured Derm Dx

Derm Dx: A cluster of moles on a man's back

A 35-year-old man has a family history of skin cancer and requests a full body examination. His wife is especially concerned about a cluster of moles on his back.

Derm Dx: A growth behind the ear

A 58-year-old man presents for evaluation of a growth behind his left ear. The lesion has been present for at least 2 years and is occasionally irritated by hair combing.

Derm Dx: A rash on the cheek and forehead

The patient is a 43-year-old Hispanic man who complains of a rash affecting his right cheek and forehead. The eruption was first noted 3 weeks ago and is asymptomatic.

Derm Dx: A rash on the arms and trunk of an elderly man

The patient is an 86-year-old man with a 4-decade history of skin rashes. The rash was first noted on his thigh and over time spread to his arms and trunk and is occasionally itchy.

Derm Dx: An asymptomatic rash on the lower extremities

A 27-year-old man presents with an asymptomatic rash of the lower extremities, which developed about 1 month prior. The rash started on the ankles and spread upward.

Derm Dx: A papular rash on the scalp

A 31-year-old man presents to a homeless clinic complaining of a papular rash located on the occipital region of his scalp. The rash initially began several years earlier.

Derm Dx: Pink plaques and crusting ulcerations

A 53-year-old woman with a history of hypertension, alcohol abuse, and amphetamine dependence presents with painful wounds on the bilateral antecubital fossa.

Derm Dx: A blue-black nodule on the hand

A 33-year-old Malaysian woman requests removal of a blue–black growth on her right hand. The lesion has been present for several years and is asymptomatic but unsightly.

Derm Dx: Sudden onset of itchy, reddened macules

A 42-year-old woman presents with a sudden onset of itchy, reddened macules on her trunk. Stroking her skin induces localized erythema and edema.

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