A New Classification of Pattern Hair Loss That Is Universal for Men and Women: Basic and Specific (BASP) Classification

May 2007 in “ Journal of The American Academy of Dermatology ”

Won Soo Lee, Byung In Ro, Soon-Tae Hong, Hana Bak, Woo Young Sim, Do Won Kim, Jang Kyu Park, Chull Wan Ihm, Hee Chul Eun, Oh Sang Kwon, Gwang Seong Choi, Young Chul Kye, Tae Young Yoon, Seong‐Jin Kim, Hyung Ok Kim, Hoon Kang, Jawoong Goo, Seok Yong Ahn, Minjeong Kim, Soo Young Jeon, Tak Heon Oh

pattern hair loss PHL BASP classification anterior hairline shape hair density frontal area vertex area hair loss hairline shape frontal hair vertex hair

Studysummary This study describes the development of the BASP classification system, providing a universal and systematic approach for classifying pattern hair loss in both men and women.

Our plain-language summary. Not medical advice or a treatment recommendation. Consult a qualified healthcare professional before changing treatment. Full disclaimer

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13 / 13 results

research Androgenetic Alopecia in Women

139 citations , June 2003 in “Journal of Investigative Dermatology Symposium Proceedings”

This article reviews androgenetic alopecia in women, highlighting diagnosis criteria and noting that topical minoxidil is currently the only proven treatment for hair growth; it reports no clinical trial findings.

research Current and Novel Methods for Assessing Efficacy of Hair Growth Promoters in Pattern Hair Loss

86 citations , February 2003 in “Journal of The American Academy of Dermatology”

This article discusses various mechanisms for promoting hair growth in pattern hair loss and highlights the challenge of balancing short-term measurable results in trials with the need for long-term efficacy data.

research A Random Study of Asian Male Androgenetic Alopecia in Bangkok, Thailand

26 citations , September 2002 in “Dermatologic Surgery”

This study reports that the prevalence of male pattern baldness in Asians is higher than previously believed, with potential links to socioeconomic factors and westernized diets, though the exact cause remains unclear.

research Female Pattern Hair Loss

226 citations , September 2001 in “Journal of The American Academy of Dermatology”

Hair loss in women is genetic, diagnosed by examination and biopsy, and treated with minoxidil, finasteride, or transplantation.

research The Prevalence and Types of Androgenetic Alopecia in Korean Men and Women

157 citations , July 2001 in “British Journal of Dermatology”

In this study, the prevalence of androgenetic alopecia among Korean men and women was found to be lower than in caucasians, with Korean men showing more frontal hairline preservation and a higher incidence of 'female pattern' hair thinning.

research Incidence of Female Androgenetic Alopecia (Female Pattern Alopecia)

89 citations , January 2001 in “Dermatologic Surgery”

Hair loss in women is common, starts in late 20s, and affects 30% of women over 50.

research Multifactorial Classification of Male and Female Androgenetic Alopecia

32 citations , June 2000 in “Dermatologic Surgery”

Different factors help diagnose and treat hair loss accurately.

research A New Classification of Male Pattern Baldness and a Clinical Study of the Anterior Hairline

21 citations , January 2000 in “Aesthetic Plastic Surgery”

This study introduced a new classification method for male pattern baldness in Korean men, detailing six types that could guide hair restoration surgery and further research.

research The Midline Part: An Important Physical Clue to the Clinical Diagnosis of Androgenetic Alopecia in Women

90 citations , January 1999 in “Journal of The American Academy of Dermatology”

This article highlights a specific, yet largely unrecognized, sign that aids in diagnosing androgenetic alopecia in women, emphasizing its practical application in clinical settings.

research Finasteride in the Treatment of Men with Androgenetic Alopecia

581 citations , October 1998 in “Journal of The American Academy of Dermatology”

In male pattern hair loss, this study found that finasteride 1 mg daily significantly slowed hair loss and increased hair growth over two years compared to placebo.

research Psychological Effects of Androgenetic Alopecia on Women: Comparisons with Balding Men and Female Control Subjects

222 citations , October 1993 in “Journal of The American Academy of Dermatology”

This study found that androgenetic alopecia causes significant psychological distress, particularly in women, who exhibit a more negative body image and less adaptive functioning compared to controls.

research Classification of the Types of Androgenetic Alopecia (Common Baldness) Occurring in the Female Sex

666 citations , September 1977 in “British Journal of Dermatology”

This article presents a classification system for stages of female-pattern androgenetic alopecia to aid early diagnosis and mentions existing systems for rare male-pattern cases, but reports no new clinical results.

research Androgenetic Alopecia

3 citations , January 1977 in “Archives of Dermatology”

This letter provides historical insights into the origin of the term "androgenetic alopecia," highlighting its use by Dr. Orentreich in the late 1950s based on his autograft studies.