Baquedano OAB, Aguilar GK, Gómez SKD, Sierra ASI, Villanueva OJD

Language: Spanish
References: 20
Page: 21-26
PDF size: 438.53 Kb.

ABSTRACT

Background: White stone is a chronic superficial mycosis caused by yeast fungi of the genus Trichosporon. It is a rare, asymptomatic, chronic infection that affects the hair externally, without invading it, in the form of adherent, soft, whitish nodules. It is mainly located on the head but can affect other areas less frequently.
Clinical case: 5-year-old female, presenting dermatosis of 6 months of evolution, located on the scalp, characterized by asymptomatic nodules of 2 to 3 mm, firm, whitish, adherent, surrounding the hair shaft, at irregular intervals; being treated on multiple occasions as treatment-resistant pediculosis. Studies were performed on the affected hair, including direct examination with KOH and fungal culture. The diagnosis of white stone by Trichosporon cutaneum was confirmed. Topical treatment was provided, with excellent results after 3 months.
Conclusions: There are pathologies that produce nodular lesions in the hair, so white stone should be considered within the differential diagnoses, always making an integral and timely approach, to avoid a delay in diagnosis, inadequate treatments, and unnecessary costs.

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