Have You Seen This Food-Related Rash?

Emily M. Altman, MD


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?


Comments on Medscape are moderated and should be professional in tone and on topic. You must declare any conflicts of interest related to your comments and responses. Please see our Commenting Guide for further information. We reserve the right to remove posts at our sole discretion.