Central Centrifugal Cicatricial Alopecia Following a Patchy Pattern: A New Form of Clinical Presentation and a Challenging Diagnosis for the Dermatologist.

Central centrifugal cicatricial alopecia (CCCA) is included among the primary lymphocytic cicatricial alopecias. The current nomenclature of CCCA suggested by the North American Hair Research Society refers to the traditional clinical presentation pattern of this type of alopecia, which begins in the central area of the scalp and has a progressive and symmetric centrifuge evolution. However, some exceptions should be highlighted, and a new clinical variety of CCCA presenting with patches of hair loss affecting the lateral and posterior scalp has been recently described. Here, we report a new case of CCCA presenting with a patchy pattern. In addition to the fact that this new patchy presentation of CCCA is not contemplated in the current terminology, it has a difficult differential diagnosis with other alopecias that have patches as their presentation. In these cases, both the trichoscopy and the histopathology are indispensable for diagnosis that will allow a targeted treatment and avoid an unfortunate prognosis.