A 16-Year-Old Boy Is Brought to the Office Due to a Rash

question 379

Multiple Choice

A 16-year-old boy is brought to the office due to a rash on his chin.  The boy sustained a minor cut while shaving with his father's razor 4 days ago.  The patient was also using a new shaving cream at the time.  The bleeding stopped with minimal pressure.  The surrounding skin appeared red the next day.  Since then, the affected area has increased in size, become tender, and appeared "wet."  This morning, the rash is "dry and crusty."  The patient has a history of acne vulgaris and uses a topical retinoid and benzoyl peroxide on his forehead and cheeks.  He also periodically develops "cold sores" when experiencing stress, such as before tests at school.  He takes no other medications and has no known allergies.  Temperature is 37 C (98.6 F) .  Physical examination shows a well-appearing adolescent in no distress.  Skin examination reveals inflammatory acne on the cheeks and forehead.  The rash on the chin is shown in the exhibit.  Which of the following is the most likely diagnosis in this patient?

• A)Contact dermatitis
• B)Erysipelas
• C)Herpes simplex infection
• D)Impetigo
• E)Tinea barbae

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Definitions:

Operating Revenues

The income earned from a company's primary business activities, excluding one-time or unusual expenses or incomes.

Variable Operating Costs

Expenses that vary in direct proportion to the level of production or sales volume.