Featured Derm Dx

Derm Dx: A factory worker with an itchy rash on the wrists and ankles

A 42-year-old manufacturing plant worker presents with an itchy rash that was previously diagnosed as contact dermatitis. Mometasone cream has been ineffective.

Derm Dx: A reddish rash on the scrotum

A 38-year-old man presents with diffuse erythema of his scrotum. Oral fluconazole and topical econazole have been ineffective. He is taking alprazolam for anxiety.

Derm Dx: Discolored patches on the torso of a woman with vulvar lichen sclerosus

Examination of a 62-year-old woman with biopsy-confirmed lichen sclerosus of the vulvar region finds discolored patches with central telangiectasias on her abdomen and chest.

Derm Dx: A growing knot in the palm

A nonsmoker who admits to binge drinking presents with a firm, fixed cord in her palm and loss of mobility and contracture of the ring finger.

Derm Dx: Whitening and crumbling of fingernails

An 11-year-old boy presents with hand and foot blisters, a slight fever, mouth irritation, and most recently, distal whitening and crumbling of 3 fingernails.

Derm Dx: Purplish scrotal lesions in a man with hypertension

A 70-year-old man who takes hydrochlorothiazide for hypertension presents with violaceous papules on his scrotum, which also has a reddish tinge.

Derm Dx: Extensive sun exposure and red lesions on the arms and legs

A 65-year-old man presents with red lesions on his arms and legs. He has no history of skin cancer but admits to ample sun exposure since early childhood.

Derm Dx: A firm nodule with a positive skin crease sign

A 10-year-old boy presents with an asymptomatic firm nodule on his cheek. When the lesion is squeezed, a longitudinal crease is noted at the center.

Derm Dx: An enlarging erythematous nodule on the forehead

A 43-year-old woman presents with a growing nodule on her forehead. When it was smaller, it was "easily covered by my bangs," but now she wants it removed.

Derm Dx: A baby with a rash on the hands and feet

A 3-month-old Hispanic male presents with scattered flesh-colored papules and pustules on his palms and soles.

Derm Dx: Itchy bumps on a man who uses a hot tub regularly

A man presents with itchy bumps on his arms and legs. He lives alone, does not have pets, and uses a hot tub regularly.

Derm Dx: Hyperpigmented, hyperkeratotic papules covered by waxy scale

A moderately obese 40-year-old white woman presents with an intermittently pruritic rash on her chest and flexural and anogenital regions.

Derm Dx: Why would this word appear on this man's back?

A 20-year-old college student presents with a 4-week history of intermittent itching, and stroking of the skin of his back elicits raised wheals.

Derm Dx: A new scalp lesion in a man with a history of cancer

An 84-year-old man with a history of sun exposure, basal and squamous cell carcinomas, and solar keratoses presents with a new lesion on his scalp.

Derm Dx: Geometrically arranged furrows on the neck

Examination of a fair-skinned 80-year-old man who comes in for treatment of actinic keratoses finds geometrically arranged furrows on his posterior neck.

Derm Dx: Distressing male groin lesions

A 40-year-old man presents with a 2-year history of asymptomatic but psychologically distressing lesions on his groin.

Derm Dx: A rash about the mouth and chin

A 21-year-old woman presents with a rash over her mouth and chin that clears when treated with oral prednisone and then flares shortly after discontinuation.

Derm Dx: A diffuse erythematous eruption on a teenager

A 16-year-old female presents with a diffuse erythematous eruption with minimal scale, sparing the palms, soles, and face.

Derm Dx: Ptosis following an outpatient cosmetic procedure

A 54-year-old man presents with a 2-week history of a drooping eyelid. He is taking finasteride and underwent an outpatient cosmetic procedure 3 weeks earlier.

Sign Up for Free e-newsletters