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Assessment of rate of hair growth using a simple trichometer

  • M. Katz
  • K. E. Wheeler
  • M. Radowsky
  • W. Gordon
Article

Abstract

A simple, portable, inexpensive trichometer has been designed for accurate measurement of hair length. The sensitivity of this instrument is 0·2 mm. A high degree of reproducibility is attained irrespective of whether used repeatedly by the same observer or by different observers. The mean coefficient of variation for the method is 5·9%. The instrument has been used effectively to assess objectively the rate of hair growth in hirsute females.

Keywords

Hair growth Trichometers 

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References

  1. Dewhurst, C. J., Underhill, R., Goldman, S. andMansfield, M. (1977) The treatment of hirsutism with cyproterone acetate (an anti-androgen).Brit. J. Obstet. Gynaecol.,84, 119–123.Google Scholar
  2. Hammerstein, J., Meckies, J., Leo-Rossberg, I., Moltz, L. andZeilske, F. (1975)Annals Int. Med.,83, 817–819.Google Scholar
  3. Munro, D. D. (1966) Hair growth measurement using intradermal sulphur35 cystine.Arch. Dermat.,93, 119–122.CrossRefGoogle Scholar
  4. Saitoh, M., Uzuka, M. andSakamoto, M. (1966) Rate of hair growth.In Montagna, W. andDobson, R. L. (Eds.)Advances in biology of skin, 1st edn., vol. 9, 183–201.Google Scholar

Copyright information

© IFMBE 1979

Authors and Affiliations

  • M. Katz
    • 1
    • 2
    • 3
  • K. E. Wheeler
    • 1
    • 2
    • 3
  • M. Radowsky
    • 1
    • 2
    • 3
  • W. Gordon
    • 1
    • 2
    • 3
  1. 1.Department of Obstetrics & Gynaecology, Groote Schuur HospitalUniversity of Cape Town ObservatoryCapeSouth Africa
  2. 2.Department of Chemical Engineering, Groote Schuur HospitalUniversity of Cape Town ObservatoryCapeSouth Africa
  3. 3.Department of Dermatology, Groote Schuur HospitalUniversity of Cape Town ObservatoryCapeSouth Africa

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