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Dermatology Hot Topics

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A 9-year-old boy presented with a 1-week history of pruritus and rash on his elbows, knees, back, and legs. Several areas of excoriation were noted. He had recently run through a field of tall grass but denied any other exposure history.

A 9-year-old boy presented with a 1-week history of pruritus and rash on his elbows, knees, back, and legs. He had recently run through a field of tall grass but denied any other exposure history. Your Dx?

Clinical Topics

What Cause of This Itchy Rash?


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?

This 15-year-old has a pruritic, flat-topped, monomorphic papular rash on his face and arms for the past 6 days. He takes no medications, has not been sick recently, and has not been exposed to poison oak.

A.  Papular acrodermatitis of childhood (Gianotti-Crosti)

This monomorphic papular rash is unrelated to medications, recent sickness, or exposure to poison oak. It developed about 6 days earlier. 

Teen With Itchy Papular Rash on Face and Arms

Acromegaly was diagnosed in a 36-year-old woman who presented with loss of vision in the right eye that had initially involved the peripheral field. MRI scans of the brain revealed a 6 × 6 × 4-cm sellar mass with suprasellar and parasellar extension encasing the right cavernous sinus and carotid artery.

A. Excess growth hormone production from the pituitary gland as a result of a functional adenoma is the most common cause.

B. It remains undiagnosed for up to 10 years on average.

C. The diagnostic test of choice is an oral glucose tolerance test.

D. End-organ manifestations (eg, arthropathy, cranial nerve palsies, diabetes) contribute to overall mortality increase.

Acromegaly was diagnosed in a 36-year-old woman who presented with loss of vision in the right eye that had initially involved the peripheral field. Which statement about acromegaly is NOT true?

Acromegaly: A Pop Quiz

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"?

A 42-year-old man presents with a pruritic rash characterized by pink, scaly plaques with a few crusted erosions on the elbows

knees, lower back, and buttocks. Review of systems was negative, although there was a strong positive family history of celiac disease. He took no medications and was otherwise healthy.

A pruritic, scaly rash appeared on this 42-year-old man's elbows, knees, lower back, and buttocks. Can you ID? 

Elbow Erosions 

Terry Brenneman, MD

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