Have You Seen This Food-Related Rash?

Emily M. Altman, MD

Disclosures

January 25, 2016

Clinical Presentation: Man With a Streaky Red Rash

A 44-year-old man presents to the clinic with a 2-day history of a pruritic rash (Figures 1 and 2).

Figure 1. Streaky red rash on the patient's back. Courtesy of National Institutes of Health.

Figure 2. Close-up of rash on shoulder. Courtesy of National Institutes of Health.

A comprehensive review of systems is negative; of note, the patient denies fever, chills, fatigue, weight loss, myalgia, and arthralgia. The patient's history includes a trip to Asia from which he returned this morning. He is otherwise healthy and takes no medications. He has no known allergies.

On physical examination, a flagellate, erythematous urticarial and papulovesicular eruption is visible on the patient's shoulders and back. What are the possible causes of this type of rash?

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