Acne is the most common chronic skin disease among young people, and it is one of the most frequent causes of dermatological consultation. Many classifications of acne are known; some simple and others more complex and difficult to understand. The Ibero-Latin American Group on Acne Study (GILEA) -Chapter of acne, rosacea, and related conditions, from the Ibero-Latin American College of Dermatology (CILAD)- is composed by renowned dermatologists, specialists in acne, from most countries of Latin America and the Iberian Peninsula. Since its inception in 2004, the group has been working on a classification that seeks to associate the concepts of age, clinical form and severity, as well as a treatment algorithm based on this classification. The result was the first version that was published in 2012 in the second edition of Acné. Un enfoque global (Acne; a global approach), and the classification presented here is a new version (2014) with slight modifications over the previous consensus and the result of consultations among the members of GILEA. The authors consider that this classification will provide a new basis for addressing clinical, epidemiological and therapeutic studies. Nevertheless, like any other medical concept, it is open to future changes resulting from the advances in science.
