Multivariate Analysis in Alopecia Areata: Risk Factors and Validity of Clinical Forms

In 1965, Ikeda¹ proposed the following clinical classifications of alopecia areata (AA): "common AA," "atopic," "prehypertensive," and "mixed" or "combined" types. In 1995, Colombe and colleagues² defined 2 clinical-evolutive types of AA: long-standing patchy AA and long-standing alopecia totalis and alopecia universalis, by genetic studies.