We have all seen the television ad for Corona Beer of the male staring at a beautiful bikini clad woman on the beach and his girlfriend sprays him with lime juice from the lime in her Corona beer. Little did we know that the lime spray plus the sun can produce a nasty skin rash known as Mexican Beer Dermatitis?
Mexican beers are often served with a lime. The lime contains chemicals called psorlens. Psoralens sensitize the skin to the sun especially ultraviolet light of the UV-A spectrum. This fact is used to treat patients with skin conditions with psoralens and ultraviolet light.
In the case of the wandering eye beach goer, the combination of sun and lime juice can lead to a brown discoloring rash that could take several weeks to even months to resolve. The skin becomes discolored much like after a jelly fish sting or poison ivy and the discoloration can last for months.
Doctor Scott Flugman of Huntington Hospital in New York described the entity in a case study published in the Archives of Dermatology. I thank Dr. Flugman and will recommend to my patients that they consume their Mexican beer orally rather than use it as a shampoo or sun screen.