Quantitative Analysis Using the Phototrichogram Technique of an Italian Population Suffering from Androgenic Alopecia

Abstract

Abstract:In this study, the values of some scalp basal parameters, collected during several clinical studies involving a total of 254 subjects with androgenic alopecia, were analyzed. Subjects' values were grouped by age and gender, and the differences between groups were examined. The density values (n • of hair/cm 2 ) and the percentages of anagen and telogen hair were considered. Furthermore, the variations recorded at the end of cosmetic treatments (ranging from 12 to 16 weeks) aiming to reduce excessive hair loss were analyzed. The basal values regarding the percentage of hair in the anagen phase evidenced a linear decrease with increasing age, with a corresponding increase of the percentage of hair in the telogen phase. As far as the hair density differences between males and females are concerned, females had a mean value significantly higher than males. Moreover, at the end of the intended anti-hair loss treatments, females were more susceptible to improvements of their hair density values.

Female pattern hair loss—An update

“…Trichogram has been found pathological in 62% of those with early FPHL and 84.2% in advanced FPHL. [ 27 ] The unit area trichogram can also be used in which a fixed area is sampled Phototrichogram: It is a technique that makes it possible to determine the density and the percentage of anagen and telogen hair in a selected area on the scalp by taking magnified images of the scalp using a light microscope or a dermoscope[ 28 ] Trichoscopy: Dermoscopy can contribute to the diagnosis of FPHL, especially in the early stages of the disease. The main dermoscopic finding is the diversity in the thickness of the hairs with an increased number of miniaturized hairs, especially in the frontoparietal region [ Figure 4 ].…”

“…Phototrichogram: It is a technique that makes it possible to determine the density and the percentage of anagen and telogen hair in a selected area on the scalp by taking magnified images of the scalp using a light microscope or a dermoscope[ 28 ]…”