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Genetic and Rare Diseases Information Center (GARD)

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Trichostasis spinulosa

Other Names for this Disease
  • Elevated dark spiny papules on the face or trunk
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Trichostasis spinulosa (TS) is a condition where instead of one hair protruding from a hair follicle, a bundle or bush of hair come out of a single follicle. This results in elevated, dark spiny papules on the head, face (usually the nose), and trunk. In this condition, there are numerous tiny open pores filled with multiple tiny short hairs, usually only visible with a magnifying glass. TS usually does not cause problems and may only be noticed as an incidental finding. The exact cause is unknown.[1]

Last updated: 6/28/2011


  1. Krivda SJ & Elston DM. Trichostasis Spinulosa . eMedicine. June 2010; Accessed 6/28/2011.
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Basic Information

  • DermNet NZ is an online resource about skin diseases developed by the New Zealand Dermatological Society Incorporated. DermNet NZ provides information about this condition.

In Depth Information

  • Medscape Reference provides information on this topic. Click on the link to view this information. You may need to register to view the medical textbook, but registration is free.
  • Orphanet is a European reference portal for information on rare diseases and orphan drugs.  Access to this database is free of charge.
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Trichostasis spinulosa. Click on the link to view a sample search on this topic.