71 citations
,
March 1995 in “Journal of The American Academy of Dermatology” Using both vertical and transverse sections for alopecia biopsies improves diagnosis without extra cost.
56 citations
,
July 2005 in “Journal of The American Academy of Dermatology” Using both vertical and transverse sections gives a better diagnosis of alopecia than using one method alone.
33 citations
,
August 2005 in “The American Journal of Dermatopathology” Both vertical and transverse sections are useful for diagnosing alopecia, but using both methods together is best.
19 citations
,
September 2011 in “Clinical and Experimental Dermatology” Transverse scalp sections are better for diagnosing non-scarring hair loss, while vertical sections are better for a specific scarring hair loss called lichen planopilaris.
19 citations
,
December 2001 in “Dermatologic Therapy” Horizontal scalp biopsy sections are better for diagnosing alopecia areata, showing fewer hair follicles and more miniaturized hairs.
February 2009 in “Journal of the American Academy of Dermatology” Transverse sections are better for non-scarring hair loss, vertical sections are better for lichen planopilaris, and either method works for other scarring hair loss types.
16 citations
,
February 2018 in “Journal of The American Academy of Dermatology” Scalp biopsies from dermatomyositis patients show chronic hair loss without scarring, with mucin and blood vessel changes being very common.
9 citations
,
November 2009 in “Journal of the European Academy of Dermatology and Venereology” Cutting scalp biopsies in consecutive slices improves diagnosis of hair loss conditions.
309 citations
,
May 1993 in “Journal of The American Academy of Dermatology” Horizontal scalp biopsy sections effectively diagnose and predict MPAA, with follicular density and inflammation impacting hair regrowth.
5 citations
,
November 2017 in “Dermatologica Sinica” Transverse scalp biopsies are more accurate for diagnosing non-cicatricial alopecia, but examining both types is best for accuracy.
42 citations
,
December 1990 in “The Journal of Dermatologic Surgery and Oncology” The study found that horizontal sections of scalp biopsies are better for analyzing hair loss, showing fewer hairs and more fine hairs in balding areas.
35 citations
,
November 2010 in “Journal of Cutaneous Pathology” Dilated follicular infundibula and increased catagen/telogen follicles are key indicators for diagnosing alopecia areata.
14 citations
,
September 2016 in “Journal of Cutaneous Pathology” The document concludes that new methods improve the accuracy of diagnosing scalp alopecia and challenges the old way of classifying it.
9 citations
,
January 2010 in “International Journal of Trichology” The study found that the cause of alopecia areata can be identified through tissue analysis, and vertical sections are enough for diagnosis.
9 citations
,
June 2008 in “Springer eBooks” Understanding hair follicle structure is key for treating hair disorders and could help develop new treatments.
3 citations
,
November 1999 in “Journal of Cutaneous Medicine and Surgery” Examining scalp biopsies in different ways helps better diagnose hair loss types.
2 citations
,
January 2018 in “DOAJ (DOAJ: Directory of Open Access Journals)” The most effective way to diagnose non-scarring hair loss is by transverse sectioning, and some cases, particularly in males with inflammation around hair follicles, might be curable.
2 citations
,
July 2013 in “InTech eBooks” Scalp biopsy helps tell apart permanent and temporary hair loss types and guides treatment.
1 citations
,
July 2025 in “Indian Dermatology Online Journal” Scalp biopsies are crucial for diagnosing hair loss types accurately.
10 citations
,
July 2017 in “Archives of Plastic Surgery” Hair thickness decreases from the upper to lower areas of the back of the head, affecting hair transplant results.
Combining vertical and horizontal sectioning improves scalp biopsy analysis for alopecia.
170 citations
,
December 2009 in “Histopathology” The conclusion is that accurate diagnosis of different types of hair loss requires good teamwork between skin doctors and lab experts.
53 citations
,
September 2011 Other common signs, not just the well-known immune cells around hair bulbs, are important for diagnosing hair loss from alopecia areata.
40 citations
,
May 2012 in “British Journal of Dermatology” Recognizing specific features of African-American hair can help diagnose hair loss conditions.
1 citations
,
May 2020 in “Journal of The American Academy of Dermatology” Inflammation and fibrosis are important factors in hair loss, but more research with better control samples is needed.
April 2012 in “Informa Healthcare eBooks” Temporal triangular alopecia is a lifelong condition with hairless patches on the side of the head that may be present from birth.
137 citations
,
July 2004 in “Journal of The American Academy of Dermatology” Horizontally sectioned scalp biopsies are more reliable for diagnosing hair loss in women when three samples are taken instead of one.
29 citations
,
September 2014 in “American Journal of Dermatopathology” Horizontal sections of scalp biopsies are good for diagnosing Central Centrifugal Cicatricial Alopecia and help customize treatment.
12 citations
,
June 2013 in “The American Journal of Dermatopathology” A new method using visual aids to diagnose hair diseases was effective after brief training.
3 citations
,
January 2018 in “Dermatology” Scalp biopsies help tell apart androgenetic alopecia and alopecia areata.