The lack of significant changes in scalp hair follicle density with advancing age

Abstract

BACKGROUND: Age-related reduction in hair is seen in the axillary and pubic regions as well as the scalp; however, it has not been investigated qualitatively on the scalp. Horizontally sectioned scalp biopsy is an ideal tool to investigate the impact of advancing age on scalp hair follicle density and morphology. OBJECTIVES: To examine the effect of age and follicle miniaturization on total hair count in 1666 horizontally sectioned mid-scalp biopsies from 928 women aged between 13 and 84 years with hair loss. SETTING: Specialist hair loss referral clinic in a teaching hospital. DESIGN: Analysis of data set. Methods: All scalp biopsies were 4 mm in diameter and taken from the crown. Miniaturi..