Warning after toddler suffers serious burn caused by reaction to citrus fruit

The term refers to a burn that can result when a chemical called furocoumarin, which is found in citrus fruits, reacts with sunlight. Photo / Getty ImagesA child in Australia has suffered a "margarita burn". The term refers to a burn that can result when a chemical called furocoumarin, which is found in citrus fruits, reacts with sunlight. Tiny Hearts Education, a company that provides first-aid training, shared the warning on Instagram to remind parents of an unusual injury called a “margarita burn”. The term is a burn that can result when a chemical called furocoumarin, which is found in citrus fruits, reacts with sunlight.