Trichotillometry: A Technique for Hair Assessment

March 2015 in “ Skin Research and Technology ”

Abdel-Aziz El-Rifaie, A. M. Abdel Wehab, Yasser Gohary, Abd El Aziz El-Rifaie

trichotillometry hair assessment epilating force anagen hair follicles telogen hair follicles catagen hair follicles androgenetic alopecia AGA hair loss scalp hair disease management hair pulling force measurement hair growth phases male pattern baldness

Studysummary This study suggests that using trichotillometry to establish the normal range of shear strain for different hair types could inform diagnostic and treatment decisions for various hair conditions.

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Research cited in this study

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research Changes in Hair Weight and Hair Count in Men with Androgenetic Alopecia After Treatment with Finasteride, 1 mg, Daily

66 citations , April 2002 in “Journal of The American Academy of Dermatology”

In this study, finasteride, 1 mg daily, significantly increased hair weight more than hair count in men with androgenetic alopecia, indicating additional factors like hair growth rate and thickness may contribute to its effectiveness.

research Photographic Documentation of Hair Growth in Androgenetic Alopecia

102 citations , October 1996 in “Dermatologic Clinics”

Photographic documentation crucial for evaluating hair growth in androgenetic alopecia.

research Quantitative Study of the Human Hair Follicle in Normal Scalp and Androgenetic Alopecia

19 citations , August 1993 in “Journal of Cutaneous Pathology”

In this study, researchers found that as androgenetic alopecia severity increased, the hair follicle matrix and dermal papilla's volume and cell nuclei number decreased, especially in the papilla.

research Diagnostic and Predictive Value of Horizontal Sections of Scalp Biopsy Specimens in Male Pattern Androgenetic Alopecia

309 citations , May 1993 in “Journal of The American Academy of Dermatology”

This study concluded that horizontal sections of scalp biopsy specimens provide more diagnostic information for male pattern androgenetic alopecia than vertical sections and can predict hair regrowth potential following topical minoxidil therapy.

research Scalp Immersion Proxigraphy: An Improved Imaging Technique for Phototrichogram Analysis

28 citations , October 1992 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology”

In this study, Scalp Immersion Proxigraphy (SIP) was shown to produce more accurate measurements of linear hair growth rate than crude phototrichogram techniques, suggesting SIP's suitability for clinical trials monitoring hair growth.

research Quantitative Estimation of Hair Growth: Androgenetic Alopecia in Women and the Effect of Minoxidil

85 citations , December 1990 in “Journal of Investigative Dermatology”

Minoxidil promotes hair growth in women with early-stage alopecia.

research Patterned Androgenic Alopecia in Women

130 citations , May 1988 in “Journal of The American Academy of Dermatology”

This study found that frontal and frontoparietal hair recession is relatively common in women, especially after menopause, and may not indicate abnormal androgen metabolism absent other virilization signs.

research The Unit Area Trichogram in the Assessment of Androgen-Dependent Alopecia

90 citations , October 1983 in “British Journal of Dermatology”

This study found that individuals with androgenic alopecia have an increased number of thin hairs (less than 40 microns in diameter) per cm², which may affect their clinical appearance.

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.