Localised acquired trichorrhexis nodosa of the scalp hair induced by a specific comb and combing habit - a report of three cases.

Trichorrhexis nodosa is a hair shaft disorder often encountered in clinical practice. Acquired trichorrhexis is commoner of the two types and is most often due to weathering from physical or chemical causes. We report three representative cases of localized acquired trichorrhexis encountered in our clinic attributable to a specific comb, used commonly in Kerala, a Southern state of India.