Triangular alopecia
Triangular alopecia (also known as "Temporal alopecia" and "Temporal triangular alopecia"[1]) is hair loss that may be congenital but usually appears in childhood as a focal patch of loss that may be complete or leaving fine vellus hairs behind.[2]: 643 Affected individuals are typically entirely healthy. TTA has been associated with several disorders, such as Phakomatosis pigmentovascularis. Hair restoration surgery using follicular unit transplantation has been a successful treatment modality for TTA
Frequency and Occurence
The suggested frequency for this condition in the general population is around 0.11%. The hair loss is non-progressive and does not expand beyond these areas. It is a non-inflammatory, non-scarring form of hair loss easily confused with alopecia areata. In one report the condition was incorrectly believed by the parents to be induced by doctors inserting intravenous cannulas into scalp vessels during the neonatal period. The condition is permanent and the affected skin does not change later in life.[3]
See also
References
- ^ Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. p. 996. ISBN 1-4160-2999-0.
{{cite book}}: CS1 maint: multiple names: authors list (link) - ^ Freedberg, et al. (2003). Fitzpatrick's Dermatology in General Medicine. (6th ed.). McGraw-Hill. ISBN 0071380760.
- ^ http://www.keratin.com/af/af005.shtml