Pili torti

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Pili torti
Menkes disease

Pili torti (also known as "Twisted hairs") is characterized by short and brittle hairs that appear flattened and twisted when viewed through a microscope.[1]: 638 [2]: 764 [3]

This phenotype is noted in Menkes disease, and Lichen Planopilaris

Pili torti can also occur after use of retinoids, such as isotretinoin

Light microscopy of hair shaft showing pili torti

See also


  1. Freedberg, et al. (2003). Fitzpatrick's Dermatology in General Medicine. (6th ed.). McGraw-Hill. ISBN 0-07-138076-0.
  2. James, William; Berger, Timothy; Elston, Dirk (2005). Andrews' Diseases of the Skin: Clinical Dermatology. (10th ed.). Saunders. ISBN 0-7216-2921-0.
  3. Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 1-4160-2999-0.

External links