Medicine:White piedra

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White piedra
Other namesTinea blanca
Piedra Blanca Micosis.jpg
SpecialtyInfectious disease

White piedra (or tinea blanca) is a mycosis of the hair[1] caused by several species of fungi in the genus Trichosporon. It is characterized by soft nodules composed of yeast cells and arthroconidia that encompass hair shafts.

Signs and symptoms

White piedra is asymptomatic.[2][3][4]

Diagnosis

White piedra is caused by Trichosporon beigelii.[5][6] White piedra can occur on the hair of the scalp; Trichosporon ovoides is likely the cause in this case.[7] White piedra on scalp hair is rarely caused by Trichosporon inkin; pubic hair with white piedra is what T. inkin is mainly associated with.[8] White piedra can occur on pubic hair; T. inkin likely causes this.[7]

Treatment

There are several approaches to treat this infectious disease. One approach involves shaving the affected areas. Another approach involves the use of antifungal medication.[9]

See also

  • Trichobacteriosis axillaris

References

  1. ↑ "Clinical and mycological study of scalp white piedra in the State of Paraíba, Brazil". Memórias do Instituto Oswaldo Cruz 97 (5): 747–50. July 2002. doi:10.1590/S0074-02762002000500028. PMID 12219146. 
  2. ↑ Bieber, Amy Kalowitz; Pomeranz, Miriam Keltz; Kim, Randie H. (2021-03-01). "White Piedra". JAMA Dermatology 157 (3): 339. doi:10.1001/jamadermatol.2020.4266. ISSN 2168-6068. PMID 33471028. https://doi.org/10.1001/jamadermatol.2020.4266. 
  3. ↑ Bonifaz, Alexandro; Tirado-Sánchez, Andrés; Araiza, Javier; Rodríguez-Leviz, Alejandra; Guzmán-Sánchez, Daniela; Gutiérrez-Mendoza, Selene; Castrejón, Laura (2018-12-13). "White Piedra: Clinical, Mycological, and Therapeutic Experience of Fourteen Cases". Skin Appendage Disorders 5 (3): 135–141. doi:10.1159/000493374. ISSN 2296-9195. PMID 31049333. PMC 6489071. http://dx.doi.org/10.1159/000493374. 
  4. ↑ Roshan, Anupama S.; Janaki, C; Parveen, B (2009). "White piedra in a mother and daughter". International Journal of Trichology 1 (2): 140–141. doi:10.4103/0974-7753.58559. ISSN 0974-7753. PMID 20927238. 
  5. ↑ Tambe, Swagata A.; Dhurat, S. Rachita; Kumar, Chaya A.; Thakare, Preeti; Lade, Nitin; Jerajani, Hemangi; Mathur, Meenakshi (2009). "Two cases of scalp white piedra caused by Trichosporon ovoides". Indian Journal of Dermatology, Venereology and Leprology 75 (3): 293–295. doi:10.4103/0378-6323.51256. ISSN 0973-3922. PMID 19439885. 
  6. ↑ Jain, Suresh Kumar; Singh, Arti; Nyati, Asha; Mohta, Alpana; Kushwaha, Ramesh Kumar (2019). "A case of scalp white piedra caused by trichosporon ovoides". International Journal of Trichology 11 (3): 134–137. doi:10.4103/ijt.ijt_19_19. ISSN 0974-7753. PMID 31360044. 
  7. ↑ 7.0 7.1 Hay, Roderick J. (2015). "Dermatophytosis (Ringworm) and Other Superficial Mycoses". Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. pp. 2985–2994.e1. doi:10.1016/B978-1-4557-4801-3.00268-X. ISBN 9781455748013. 
  8. ↑ Kriplani, Dimple; Patel, Bharti; Viswanath, Vishalakshi; Miskeen, Autarkishen; Torsekar, Raghunandangovind (2011). "White piedra of scalp hair by Trichosporon inkin". Indian Journal of Dermatology, Venereology and Leprology 77 (5): 591–3. doi:10.4103/0378-6323.84065. PMID 21860159. 
  9. ↑ "White piedra in children". Journal of the American Academy of Dermatology 55 (6): 956–61. December 2006. doi:10.1016/j.jaad.2005.11.1033. PMID 17097391. 

External links

Classification




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