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A 67-year-old woman noted the appearance of several non-tender, rock-hard, purple-colored nodules on her legs. Her medical history was significant for distant non-Hodgkin lymphoma.

A 67-year-old woman noted the appearance of several non-tender, rock-hard, purple-colored nodules on her legs. Her medical history was significant for distant non-Hodgkin lymphoma. The violaceous color and configuration of the skin lesions suggests which of the following? 

Clinical Topics

Hard Purple Nodules: Your Dx?

A 5-year-old boy with a history of atopic dermatitis since 6 weeks of age, presents with a rash around his mouth that has been present for approximately 1 year. The patient’s mother reports that desonide topical cream was applied to the affected area for about 5 days, which initially resulted in improvement, however the rash returned after this medication was discontinued. The rash also recently improved after the patient took amoxicillin for an infection. She also notes that the patient has been licking his lips more frequently.

On examination there is an erythematous papulopustular eruption restricted to the perioral region, with sparing of the vermillion border. Mild hyperpigmentation is noted on the patient’s neck. There is no active involvement of other areas of the body.

The eruption has been present for 1 year and is restricted to the perioral region. What is included in your differential? 

Rash Around the Mouth of a 5-year-old Child

A 60-year-old homosexual man presented to the outpatient clinic with a 3-day history of facial rash associated with pain. The rash did not affect any other part of the body. He was not currently taking any immunosuppressive medication.

A 60-year-old homosexual man presented to the outpatient clinic with a 3-day history of facial rash associated with pain. The rash did not affect any other part of the body. He was not currently taking any immunosuppressive medication. What’s your diagnosis?

Fluid-Filled Blisters: Your Dx?

A 32-year-old man presents with dysphagia to solid foods. His symptoms have increased in frequency during the past 6 months. He has taken to eating much more slowly and needs water to help swallow food. His history is remarkable for seasonal allergies, for which nasal fluticasone is prescribed. He undergoes an upper endoscopy, which demonstrates diffuse rings, longitudinal furrows, and white plaques. Esophageal biopsies reveal dense eosinophilia throughout.

A. Start swallowed topical corticosteroids

B. Refer to allergist for skin prick testing

C. Begin treatment with an acid suppressant

These endoscopic findings help explain worsening dysphagia in a 32-year-old man. Esophageal biopsies prove positive for eosinophilia. How would you proceed? 

Esophageal Rings, Furrows, and Plaques: What Next?


These 2 patients presented with a swollen hand and rapidly proximally progressive edema secondary to a bite.

These 2 patients presented with a swollen hand and rapidly proximally progressive edema secondary to a bite. What creature did the biting?

Swollen Hands-What’s Biting?

A 76-year-old woman seeks your attention for an asymptomatic “red spot” on her neck. She has a history of multiple non-melanoma skin cancers.

Squamous cell carcinoma in situ (Bowen  disease)

Lichenoid keratosis (an inflammatory variant of seborrheic keratosis)

A 76-year-old woman seeks your attention for an asymptomatic “red spot” on her neck. What does this look like to you?

What's This "Red Spot"?

Linda Peckel

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