Hair and nail structure and function

Alfredo Rossi, Luca Barbieri, Giuseppe Pistola, Paola Bonaccorsi, Stefano Calvieri

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The hair and nail are skin appendages that share with the skin a common origin from the ectodermal layer. They fulfil important protective and cosmetic physiologic function. After intrauterine life, hairs are divided, by size in two major types: vellus and terminal. Terminal hair is described as being substantial or large in size with a diameter of about 60mm. The scalp hair is a typical terminal hair. Vellus hairs are smaller, more lightly pigmented and the diameter is less than 30mm. The hair has a growth cycle consisting in different phases: anagen, telogen, catagen. The nail provides protection to the distal digit as well as aesthetic adornment and dexterity. Hair and nail disorders have a deep impact in the patient self-confidence and relation life. A vast spectrum of nail or hair alterations can be observed during the course of systemic disease although a causative association is seldom proved. A deep knowledge of the structure and physiology of the nail is necessary to correctly approach the pathogenesis of nail disorders.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalJournal of Applied Cosmetology
Volume21
Issue number1
Publication statusPublished - Jan 2003

Fingerprint

Nails
Hair
Skin
Scalp
Esthetics
Cosmetics
Growth

Keywords

  • Hair
  • Nail
  • UV Protection

ASJC Scopus subject areas

  • Dermatology

Cite this

Rossi, A., Barbieri, L., Pistola, G., Bonaccorsi, P., & Calvieri, S. (2003). Hair and nail structure and function. Journal of Applied Cosmetology, 21(1), 1-8.

Hair and nail structure and function. / Rossi, Alfredo; Barbieri, Luca; Pistola, Giuseppe; Bonaccorsi, Paola; Calvieri, Stefano.

In: Journal of Applied Cosmetology, Vol. 21, No. 1, 01.2003, p. 1-8.

Research output: Contribution to journalArticle

Rossi, A, Barbieri, L, Pistola, G, Bonaccorsi, P & Calvieri, S 2003, 'Hair and nail structure and function', Journal of Applied Cosmetology, vol. 21, no. 1, pp. 1-8.
Rossi A, Barbieri L, Pistola G, Bonaccorsi P, Calvieri S. Hair and nail structure and function. Journal of Applied Cosmetology. 2003 Jan;21(1):1-8.
Rossi, Alfredo ; Barbieri, Luca ; Pistola, Giuseppe ; Bonaccorsi, Paola ; Calvieri, Stefano. / Hair and nail structure and function. In: Journal of Applied Cosmetology. 2003 ; Vol. 21, No. 1. pp. 1-8.
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