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Injury
induced hypertrichosis
It has been known for many years that any form of injury will
force telogen hair follicles into anagen growth in and around the
site of injury. This growth is temporary, as the injury heals so
the hair follicles go back to normal. Accidental injury in humans
and other mammals has long been known to promote anagen in hair
follicles. The periphery of burned areas can develop hypertrichosis
as surviving hair follicles respond to the wound repair stimuli.
Insect bites are also a form of injury that can sometimes promote
localized hair growth. Topical irritants through promoting inflammation
may cause effects similar to physical injury that promotes hair
follicle growth.
Injury
induced hypertrichosis references
- Faure Fontenla MA. Severe hypertrichosis
as an uncommon feature of juvenile dermatomyositis. J Am Acad
Dermatol. 1995 Oct;33(4):691.
- Pope DN, Strimling RB, Mallory SB. Hypertrichosis
in juvenile dermatomyositis. J Am Acad Dermatol. 1994 Aug;31(2
Pt 2):383-7.
- Ravin N. New hair growth over fracture
sites. N Engl J Med. 1990 Aug 2;323(5):350.
- Soyuer U, Aktas E, Ozesmi M. Postphlebitic
localized hypertrichosis. Arch Dermatol. 1988 Jan;124(1):30.
- Pardo GB. [Acquired localized hypertrichosis
in a mentally retarded man]. G Ital Dermatol Venereol. 1988 Apr;123(4):151-2.
- Harper MC. Localized acquired hypertrichosis
associated with fractures of the arm in young females. A report
of two cases. Orthopedics. 1986 Jan;9(1):73-4.
- Nielsen JS. Localized hirsutism following
Colles' fractures. Can Med Assoc J. 1983 Aug 1;129(3):229.
- Tisocco LA, Del Campo DV, Bennin B, Barsky
S. Acquired localized hypertrichosis. Arch Dermatol. 1981 Mar;117(3):127.
- Shafir R, Tsur H. Local hirsutism at the
periphery of burned skin. Br J Plast Surg. 1979 Apr;32(2):93.
- Tarnow G. [Disturbance of hair growth
after severe cerebral damage]. J Neurovisc Relat. 1971;0(0):suppl
10:549-56.
- Friederich HC, Gloor M. [Postoperate "irritative"
hypertrichosis]. Z Haut Geschlechtskr. 1970 May 15;45(10):419-26.
- Tarnow G, Rabe W. [Central regulation of
hair nutrition (Hypertrichoses and alopecias following severe
skull-brain injuries]. Nervenarzt. 1969 May;40(5):210-5.
- Argyris TS. Wound healing and the control
of growth of the skin. In: Advances in biology of skin, volume
5, wound healing. Montagna W, Billingham RE (eds). Oxford, Pergamon
Press, 1964, 231-49.
- Argyris TS. The growth promoting effects
of wounds on hair follicles already stimulated by plucking. Anat
Rec. 1962 143:183-8.
- Chase HB. Aspects of radiation damage likely to be involved
in tumor regression. II. Radiation damage to cells dependent
on their tissue environment. Brit J Radiol 1958; 31: 65-69.
- Ressmann AC, Butterworth T. Localized acquired
hypertrichosis (as a result of biting in mentally deficient).
Arch dermatol and Syph 1952; 65:458
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