Dermoscopy as a Noninvasive Diagnostic Modality in Erythromelanosis Follicularis Faciei et Colli: A Case Series

摘要

A myriad of conditions are diagnosed clinically in dermatology without laboratory confirmation, owing to the benign nature of these conditions and lack of a definitive noninvasive diagnostic tests. These conditions can pose a diagnostic dilemma and difference of opinion among clinicians. Erythromelanosis follicularis faciei et colli (EFFC) is one of these rare conditions that may be difficult to pick up especially at early stages. The condition was described for the first time by Kitamura et al and is clinically characterized by the presence of well-demarcated reddish brown patches of hyperpigmentation and erythema along with follicular papules present on the face, extending down to involve the neck [1,2]. It is commonplace to confuse the condition with analogous pigmentary erythematous disorders, resulting in inappropriate treatment protocols with minimal results. Moreover, patients are often reluctant to have an invasive procedure such as skin biopsy owing to the benign nature of this disease and cosmetic concerns, as it involves the face. Dermoscopic diagnosis of the disease can help overcome such a diagnostic quandary. We report clinico-epidemiological profiles and dermoscopic findings in a series of 8 patients presenting with clinical features suggestive of EFFC.