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Hair counts from scalp biopsy specimens in Asians.
J Am Acad Dermatol. 2002 Feb; 46(2):218-21.JA

Abstract

BACKGROUND

Differences in hair density have been described according to the ethnic background in whites and blacks. Asians are known to have fewer hairs than whites.

OBJECTIVE

We performed this study to assess the normal values of hair counts in scalp biopsy specimens from Koreans.

METHODS

A total of 35 subjects with clinically normal occipital scalps (13 patients with androgenetic alopecia, 20 with patchy alopecia areata, and 2 healthy volunteers) were included. Horizontal sections of 4-mm punch biopsy specimens from clinically normal occipital scalps were examined at various levels from the papillary dermis to the subcutis, and follicular counts of terminal/vellus hairs and anagen/telogen hairs were obtained.

RESULTS

The numbers of total hairs, terminal and vellus hairs, and terminal anagen hairs were significantly lower (P <.05) in Koreans compared with the published data of whites and blacks. Percent ratio of terminal anagen and telogen hairs were similar to whites and blacks. Follicular density was significantly lower (P <.05) in Koreans than in whites and blacks. In Koreans, female subjects had a significantly higher number of terminal hairs than male subjects (P <.05).

CONCLUSION

Hair density is significantly lower in Koreans than in whites or blacks. Slight sexual difference exists in follicular counts in Koreans. Our data could be used as a guideline for determining normalcy in interpreting horizontal sections of scalp biopsy specimens from Asians.

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Authors+Show Affiliations

Lee HJ
Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea.
Ha SJ
No affiliation info available
Lee JH
No affiliation info available
Kim JW
No affiliation info available
Kim HO
No affiliation info available
Whiting DA
No affiliation info available

MeSH

AdolescentAdultAge FactorsAsiansBiopsy, NeedleFemaleHairHair FollicleHumansMaleMiddle AgedProbabilityScalpSex Factors

Pub Type(s)

Clinical Trial
Comparative Study
Journal Article

Language

eng

PubMed ID

11807433

Clinical Trial Links

Hair Counts From Vertical and Horizontal Sections of Scalp Biopsy SPecimens in Thai Population With Alopecia

Citation

Lee, Hyun-Jeong, et al. "Hair Counts From Scalp Biopsy Specimens in Asians." Journal of the American Academy of Dermatology, vol. 46, no. 2, 2002, pp. 218-21.
Lee HJ, Ha SJ, Lee JH, et al. Hair counts from scalp biopsy specimens in Asians. J Am Acad Dermatol. 2002;46(2):218-21.
Lee, H. J., Ha, S. J., Lee, J. H., Kim, J. W., Kim, H. O., & Whiting, D. A. (2002). Hair counts from scalp biopsy specimens in Asians. Journal of the American Academy of Dermatology, 46(2), 218-21.
Lee HJ, et al. Hair Counts From Scalp Biopsy Specimens in Asians. J Am Acad Dermatol. 2002;46(2):218-21. PubMed PMID: 11807433.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Hair counts from scalp biopsy specimens in Asians. AU - Lee,Hyun-Jeong, AU - Ha,Seog-Jun, AU - Lee,Joo-Han, AU - Kim,Jin-Wou, AU - Kim,Hyung-Ok, AU - Whiting,David A, PY - 2002/1/25/pubmed PY - 2002/2/28/medline PY - 2002/1/25/entrez SP - 218 EP - 21 JF - Journal of the American Academy of Dermatology JO - J Am Acad Dermatol VL - 46 IS - 2 N2 - BACKGROUND: Differences in hair density have been described according to the ethnic background in whites and blacks. Asians are known to have fewer hairs than whites. OBJECTIVE: We performed this study to assess the normal values of hair counts in scalp biopsy specimens from Koreans. METHODS: A total of 35 subjects with clinically normal occipital scalps (13 patients with androgenetic alopecia, 20 with patchy alopecia areata, and 2 healthy volunteers) were included. Horizontal sections of 4-mm punch biopsy specimens from clinically normal occipital scalps were examined at various levels from the papillary dermis to the subcutis, and follicular counts of terminal/vellus hairs and anagen/telogen hairs were obtained. RESULTS: The numbers of total hairs, terminal and vellus hairs, and terminal anagen hairs were significantly lower (P <.05) in Koreans compared with the published data of whites and blacks. Percent ratio of terminal anagen and telogen hairs were similar to whites and blacks. Follicular density was significantly lower (P <.05) in Koreans than in whites and blacks. In Koreans, female subjects had a significantly higher number of terminal hairs than male subjects (P <.05). CONCLUSION: Hair density is significantly lower in Koreans than in whites or blacks. Slight sexual difference exists in follicular counts in Koreans. Our data could be used as a guideline for determining normalcy in interpreting horizontal sections of scalp biopsy specimens from Asians. SN - 0190-9622 UR - https://www.unboundmedicine.com/medline/citation/11807433/Hair_counts_from_scalp_biopsy_specimens_in_Asians_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0190-9622(02)31224-6 DB - PRIME DP - Unbound Medicine ER -