Catalog

Trichorrhexis nodosa

No MMS code

Link to WHO Definition

Trichorrhexis nodosa – http://id.who.int/icd/entity/1537798736

Trichorrhexis nodosa is a condition characterised by focal weakening of the hair shaft in response to a variety of insults. The multiple microscopic nodules which develop along the hair represent focal fraying of the cortex of the shaft and a weak point where the hair will tend to fracture. Causes include hair straightening procedures, thermal damage from hair-dryers, swimming-pool chemicals, excessive traction (e.g. tight braids) or compulsive hair twisting. It is also a component of Pollitt syndrome (q.v.).