Dhaille F, et al. - In this prospective, multicentre study involving 100 patients with a presumed diagnosis of tinea capitis (TC), researchers evaluated the diagnostic accuracy of trichoscopy. If at least one specific trichoscopic sign was noted, trichoscopy was considered positive. Data reported that culture for 53 patients was positive and negative for 47 patients. Investigators observed that the trichoscopy sensitivity was 94%, the specificity was 83%, the positive predictive value was 92% and the negative predictive value was 86%. In patients with a positive mycological culture, comma hairs, corkscrew hairs, zigzag hairs, Morse-code-like hairs and whitish sheath were significantly more frequent. Comma hairs were more common in Trichophyton TC patients, and zigzag hairs were more common in Microsporum TC patients. Morse-code-like hair has not been observed in any Trichophyton TC patients and therefore seems to be highly specific for Microsporum TC. According to findings, TC predicts the presence of a single trichoscopic finding. Trichoscopy is a useful, quick, painless, highly sensitive tool for TC diagnosis – even for dermoscopists with little trichoscopy experience. It enhances the ability of physicians to make decisions about treatment.