EEMCO Guidance for the Assessment of Hair Shedding and Alopecia
- 23 February 2004
- journal article
- guideline
- Published by S. Karger AG in Skin Pharmacology and Physiology
- Vol. 17 (2), 98-110
- https://doi.org/10.1159/000076020
Abstract
Knowledge of the hair follicle anatomy and the dynamics of hair cycling is substantial. Recognizing the anagen, catagen and telogen phases as well as teloptosis and the hair eclipse phenomenon clearly characterizes the typical hair chronobiology. Physiological modulators include hormones, neuromediators, miscellaneous biomolecules, seasons, micro-inflammation and ageing. For individuals who present with the complaint of increased hair shedding or alopecia, a host of evaluation techniques are available in addition to history, physical examination and laboratory assessment. Various clinical hair techniques can help in assessing the efficacy of drugs and cosmetics on hair growth. The methods are quite similar to those used to establish a definite diagnosis in dermatological practice. Great strides have been made during the recent decades in the methodology of hair growth trials in dermatology and cosmetology. Clinical evaluations benefit from a few additional specific techniques that enhance the perception of hair (re-) growth, shedding and alopecia. These assessments include the determination of hair patterning and density that may be helped by the ‘black-and-white felt’ examination. Daily hair counts, the ‘hair pull test’ and the ‘hair feathering test’ are also available. Instrumental methods provide reliable quantitative information that is useful if there are adequate controls. Some photographic methods, the trichogram, hair weighing and variants of the hair growth window technique including the phototrichogram, videotrichogram and tractio-phototrichogram provide insight into the complexities of hair cycling and shedding. Skin biopsy is indicated for diagnostic purposes, especially when the hair loss is accompanied by scarring.Keywords
This publication has 94 references indexed in Scilit:
- Measuring Reversal of Hair Miniaturization in Androgenetic Alopecia by Follicular Counts in Horizontal Sections of Serial Scalp Biopsies: Results of Finasteride 1mg Treatment of Men and Postmenopausal WomenJournal of Investigative Dermatology Symposium Proceedings, 1999
- Hormones and hair patterning in men: A role for insulin-like growth factor 1?Journal of the American Academy of Dermatology, 1999
- Chronic telogen effluvium: Increased scalp hair shedding in middle-aged womenJournal of the American Academy of Dermatology, 1996
- Transverse scalp sections: A proposed method for laboratory processingJournal of the American Academy of Dermatology, 1996
- Androgen Induction of Follicular Epithelial Cell Growth Is Mediated via Insulin-like Growth Factor-I from Dermal Papilla CellsBiochemical and Biophysical Research Communications, 1995
- Psychological effects of androgenetic alopecia on women: Comparisons with balding men and with female control subjectsJournal of the American Academy of Dermatology, 1993
- Diagnostic and predictive value of horizontal sections of scalp biopsy specimens in male pattern androgenetic alopeciaJournal of the American Academy of Dermatology, 1993
- The psychological effects of androgenetic alopecia in menJournal of the American Academy of Dermatology, 1992
- Hair anatomy for the clinicianJournal of the American Academy of Dermatology, 1991
- Loose anagen syndromeJournal of the American Academy of Dermatology, 1989