Featured Derm Dx

Derm Dx: Asymptomatic Blisters on a Child's Upper Leg

A 7-year-old boy presents with new-onset, asymptomatic blisters on his upper thigh.

Derm Dx: Swelling in the Finger Following a Cat Scratch

A 61-year-old woman presents with swelling in her finger after experiencing a cat scratch that resulted in bleeding 5 days earlier.

Derm Dx: Hyperpigmented Macule on the Abdomen

An 11-year-old adolescent presents with acne on her face and back as well as a sizable hyperpigmented macule on her abdomen.

Derm Dx: Asymptomatic Blisters on the Hands, Arms, and Feet

A 26-year-old man presents with asymptomatic blisters on his hands, arms, and feet that have been present for 4 days.

Derm Dx: Erythematous Rash on the Upper Back

A 32-year-old man presents with an erythematous rash on his upper back that has been present for approximately 2 months.

Derm Dx: Asymptomatic Lesion Above the Left Eye

A 36-year-old woman presents with a lesion above her left eye that has gradually increased in size over the past 8 months.

Derm Dx: Rash on the Abdomen and Upper Arms

A 75-year-old, obese woman presents with an asymptomatic rash affecting her abdomen and upper arms that has been present for 6 months.

Derm Dx: Itchy Lesion on the Chest

A 66-year-old man presents with a growth on his chest that has been present for several months. The lesion does not bleed but is sometimes itchy.

Derm Dx: A Bleeding Mole on the Forehead

A 34-year-old woman presents with a bleeding mole situated on her upper forehead that has been present for approximately 3 weeks.

Derm Dx: Rash on the Lower Abdomen and Groin

A 56-year-old overweight woman presents with a rash affecting her lower abdomen and groin that has been present for 1 year.

Derm Dx: Growth on the Left Index Finger

A 58-year-old man presents with a mass on his index finger that only recently became bothersome after increasing in size over the past 3 years.

Derm Dx: Flesh-Colored Growth on the Cheek

A 75-year-old man presents with a flesh-colored, asymptomatic growth on his right cheek that has persisted for 2 years.

Derm Dx: Dark Spots on the Arms

A 57-year-old woman presents with dark spots on her arms that have persisted for several months.

Derm Dx: Asymptomatic Genital Rash

A 65-year-old man presents with an asymptomatic rash on his penis. He denies any recent sexual activity, commencement of new medications, or prior episodes of a similar eruption.

Derm Dx: Flesh-Colored Nodule in the Left Medial Canthus

A 66-year-old woman presents with a flesh-colored nodule in the left medial canthus that had been previously removed but has since grown back.

Derm Dx: Asymptomatic Lesion on the Forearm

A 52-year-old man presents with a growing lesion on his right forearm that has developed following prolonged sun exposure.

Derm Dx: Rash on the Cheek and Scalp

A 24-year-old man presents to his clinician with acute-onset rash that developed on his left cheek and scalp.

Derm Dx: Dermatitis on the Torso of a Baseball Player

A 21-year-old baseball player presents for evaluation of multiple erythematous papules and occasional pustules on his chest and back.

Derm Dx: Flesh-Colored Papule With Pigmented Speckles

A 70-year-old woman presents for evaluation of an asymptomatic growth on her right wrist.

Derm Dx: Coarse Hairs on the Lower Extremity

A 30-year-old Hispanic man requests laser removal of cosmetically bothersome coarse hairs on his lower extremity.

Derm Dx: Pigmented Area in the Nail of the Hallux

A 42-year-old avid tennis player is referred by his primary care provider for evaluation of a pigmented area on his right big toe nail.

Derm Dx: A growth on the scalp in an elderly man

A 91-year-old man is referred by his barber for assessment of a growth on his scalp. Although he had been told by a physician that it was “basal cell” cancer, he had no further follow-up.

Derm Dx: A moderately itchy rash on the neck and cheek

A 56-year-old Hispanic man presents with a moderately itchy rash affecting his neck and lower cheek. Despite treatment with various steroid creams, the rash persisted.

Derm Dx: Abrupt onset of hair loss

A 63-year-old Hispanic woman presents with an abrupt onset of hair loss, first noted 6 weeks ago. Examination reveals diffuse thinning without evidence of scarring.

Derm Dx: A growth on the armpit

The patient is a 42-year-old man requesting removal of a growth located on his right armpit. He is moderately obese and gives no history of systemic disease.

Derm Dx: A rapidly spreading rash and fever

A 44-year-old Hispanic man presents for evaluation of a rash of 2 days’ duration. Lesions originated on his face and rapidly spread to his trunk, back, and upper extremities.

Derm Dx: A sudden, blistering rash

A 47-year-old man presents for evaluation of a rash. The rash developed 24 hours after perioperative administration of vancomycin following a gunshot wound to the abdomen.

Derm Dx: A lesion on the cheek from shaving

An 84-year-old man requests removal of a lesion on his cheek due to chronic irritation from shaving. The growth has been present for several months and is otherwise asymptomatic.

Derm Dx: Pain at the base of a fingernail

The patient is a 52-year-old woman who complains of pain at the base of a fingernail. The condition was first noted 3 days ago and initially drained pus.

Derm Dx: An itchy rash on the hands

The patient is a 62-year-old Hispanic woman seeking treatment for an itchy rash affecting both hands. The dermatitis is of at least 2 years in duration.

Derm Dx: Xerosis with a fish scale pattern

A 60-year-old man requests consultation for severely dry skin. Examination reveals marked xerosis with a fish scale pattern of both lower legs.

Derm Dx: A large lesion on the thumb

A 74-year-old woman presents for treatment of a bothersome lesion on her thumb. A flesh-colored, semitranslucent nodule is noted between the proximal nailfold and the distal interphalangeal joint.

Derm Dx: A large mass on the scalp

A 40-year-old African American man presents for evaluation of a mass affecting his posterior scalp, which has enlarged in size during the past 3 to 4 years.

Derm Dx: A dome-shaped growth on the upper thigh

The patient is a 57-year-old man requesting removal of a growth on his left upper thigh. The lesion has been increasing in size for at least 1 year’s duration and is frequently traumatized by clothing.

Derm Dx: A sudden, blotchy rash on the cheeks

The patient is an 18-month-old child who presents for evaluation of a rash affecting both cheeks. The onset was sudden and not preceded by trauma or exposure to excessive heat.

Derm Dx: Elastic skin and scattered scars

A 10-year-old boy presents for evaluation of scattered scars on his ankles and back, which are slightly atrophic and violaceous. He also has highly elastic skin.

Derm Dx: Dark areas on a teenager's trunk

A 14-year-old moderately obese Hispanic female is concerned about dark areas on her trunk, which are asymptomatic but unsightly.

Derm Dx: A growth behind the ear with straw-colored fluid

A 25-year-old woman presents for evaluation of a growth behind her right ear. The lesion was first noted several weeks ago and is asymptomatic but prone to trauma.

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.

Derm Dx: Flesh-colored lesions on an infant

A mother brings in her 13-day-old baby for evaluation of facial lesions. Noted on examination are flesh-colored lesions located in front of both ears.

Derm Dx: Hair loss in a 15-year-old female

A Hispanic woman brings her 15-year-old daughter for evaluation of hair loss at the front of her scalp. Diffuse thinning of the frontal and temporal regions is noted.

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