Case: This rash developed on the forearms and upper chest of a 13-year-old girl on the second day of a winter vacation in Hawaii. The patient lived in Canada, and this was her first tropical vacation. She had headed excitedly for the beach shortly after she arrived; however, in the early morning hours of her second day in Hawaii, she was awakened by the intensely itchy, blistering reaction shown here. The rash persisted for the remainder of the weeklong vacation despite sun avoidance. Her forearms and upper chest were the only parts of her body involved, even though other areas had also been exposed to the sun.

What advice would you give this girl’s parents for their daughter’s next tropical vacation?
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