Analysis of trichoscopic signs observed in 24 patients presenting tinea capitis: Hypotheses based on physiopathology and proposed new classification.

Introduction: Trichoscopy (hair dermoscopy) is a non-invasive and very useful technique for the diagnosis and follow-up of hair and scalp disorders. In tinea capitis, specific aspects of the hair shaft have been described, with the main ones being: comma hair, corkscrew hair, bar code-like hair (BCH) and zigzag hair (ZZH).

Method: Herein we report on a retrospective study of 24 patients with tinea capitis (TC).

[Two new trichoscopic signs in alopecic and aseptic nodules of the scalp: "Eastern pancake sign" and comedo-like structures].

Background: The purpose of this study is to describe two new trichoscopic signs, "Eastern pancake sign" and "comedo-like structures", not previously reported to our knowledge and seen in 5 patients with alopecic and aseptic nodules of scalp (AANS).

Patients And Methods: We report on 5 patients presenting AANS. Demographic and ethnic characteristics, disease duration, clinical description, treatment and evolution were noted.