The sudden appearance of a pruritic confluent erythematous rash on the anterior neck and upper back prompted a 30-year-old woman to seek medical attention. She had recently started applying 5% tea tree oil to the area to treat chronic, recurrent tinea versicolor. An herbal specialist had recommended this therapy.
"Allergic contact dermatitis from tea tree oil" (2007). Department of Family & Community Medicine Faculty Papers. Paper 12.