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Characteristics of nonbalding scalp zones of androgenetic alopecia in East Asians.
Clin Exp Dermatol. 2015 Apr; 40(3):279-85.CE

Abstract

BACKGROUND

Hair is known to persist on the occipital and part of the temporal scalp in patients with androgenetic alopecia (AGA), but no quantified data about the follicular changes in such areas exist.

AIM

To evaluate the hair characteristics in nonbalding scalp areas in East Asian patients with AGA.

METHODS

In total, 265 participants [211 patients with AGA and 50 healthy controls (HCs)] were enrolled. The patients were divided by the Basic and Specific (BASP) classification [four basic types (L, M, C, and U) and two special types (V and F)], and the hair in the occipital region and two sites of the temporal region were analysed by computer-assisted phototrichography. Hair density, hair width, number of each follicular unit, ratio of single to compound hairs and ratio of terminal to vellus hairs were examined.

RESULTS

In the temporal region, a statistically significant (P < 0.05) decrease in hair density was observed in patients with C, U or F subtypes, and a significant (P < 0.05) decrease in hair thickness was observed in patients with the U subtype compared with HCs. In the mastoid and occipital areas, both hair density and hair thickness was significantly (P < 0.05) decreased in patients with the U subtype compared with HCs. Within each classification, hairs became generally thinner as the hair loss progressed.

CONCLUSIONS

Hair density and hair thickness of known nonbalding scalp regions showed some differences depending on the severity and the BASP subtypes in East Asian people with male pattern baldness.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Kim JY
Department of Dermatology, College of Medicine, Dankook University, Cheonan, South Korea.
Kim MH
No affiliation info available
Hong SP
No affiliation info available
Park BC
No affiliation info available

MeSH

AdultAge DistributionAgedAlopeciaCase-Control StudiesHairHumansMaleMiddle AgedScalpYoung Adult

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25532463

Citation

Kim, J Y., et al. "Characteristics of Nonbalding Scalp Zones of Androgenetic Alopecia in East Asians." Clinical and Experimental Dermatology, vol. 40, no. 3, 2015, pp. 279-85.
Kim JY, Kim MH, Hong SP, et al. Characteristics of nonbalding scalp zones of androgenetic alopecia in East Asians. Clin Exp Dermatol. 2015;40(3):279-85.
Kim, J. Y., Kim, M. H., Hong, S. P., & Park, B. C. (2015). Characteristics of nonbalding scalp zones of androgenetic alopecia in East Asians. Clinical and Experimental Dermatology, 40(3), 279-85. https://doi.org/10.1111/ced.12554
Kim JY, et al. Characteristics of Nonbalding Scalp Zones of Androgenetic Alopecia in East Asians. Clin Exp Dermatol. 2015;40(3):279-85. PubMed PMID: 25532463.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Characteristics of nonbalding scalp zones of androgenetic alopecia in East Asians. AU - Kim,J Y, AU - Kim,M H, AU - Hong,S P, AU - Park,B C, Y1 - 2014/12/23/ PY - 2014/07/18/accepted PY - 2014/12/24/entrez PY - 2014/12/24/pubmed PY - 2015/12/15/medline SP - 279 EP - 85 JF - Clinical and experimental dermatology JO - Clin Exp Dermatol VL - 40 IS - 3 N2 - BACKGROUND: Hair is known to persist on the occipital and part of the temporal scalp in patients with androgenetic alopecia (AGA), but no quantified data about the follicular changes in such areas exist. AIM: To evaluate the hair characteristics in nonbalding scalp areas in East Asian patients with AGA. METHODS: In total, 265 participants [211 patients with AGA and 50 healthy controls (HCs)] were enrolled. The patients were divided by the Basic and Specific (BASP) classification [four basic types (L, M, C, and U) and two special types (V and F)], and the hair in the occipital region and two sites of the temporal region were analysed by computer-assisted phototrichography. Hair density, hair width, number of each follicular unit, ratio of single to compound hairs and ratio of terminal to vellus hairs were examined. RESULTS: In the temporal region, a statistically significant (P < 0.05) decrease in hair density was observed in patients with C, U or F subtypes, and a significant (P < 0.05) decrease in hair thickness was observed in patients with the U subtype compared with HCs. In the mastoid and occipital areas, both hair density and hair thickness was significantly (P < 0.05) decreased in patients with the U subtype compared with HCs. Within each classification, hairs became generally thinner as the hair loss progressed. CONCLUSIONS: Hair density and hair thickness of known nonbalding scalp regions showed some differences depending on the severity and the BASP subtypes in East Asian people with male pattern baldness. SN - 1365-2230 UR - https://www.unboundmedicine.com/medline/citation/25532463/Characteristics_of_nonbalding_scalp_zones_of_androgenetic_alopecia_in_East_Asians_ DB - PRIME DP - Unbound Medicine ER -