Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Hair Root Status; trichogram

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Microscopic examination method for the detection of pathological processes at hair roots and hair shaft.

General information
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The trichogram can be used for the following indications:
  • For objectification and typing of increased hair loss ( Effluvium)
  • For activity determination and prognosis of alopecia
  • To prove trichotillomania.

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Depilation of 30 to 50 hairs at 2 standard depilation sites (occipital and frontal) at the earliest 5 days after the last hair wash. After shortening, the hairs are spread out on a slide in as parallel an arrangement as possible so that the ends and hair shafts can be assessed. In the hair root status the standard values are: 80% anagen hairs (incl. dysplastic); 0-2% catagen hairs; up to 20% telogen hairs; up to 2% dystrophic hairs.


Last updated on: 29.10.2020