Hamilton–Norwood scale

Hamilton–Norwood scale is a topic that has generated interest for many years, as it affects a large number of people in different areas of their lives. Its importance lies in its influence on the personal, professional and social development of individuals. Over time, numerous studies and research have been carried out to better understand Hamilton–Norwood scale and its implications, which has led to the creation of various approaches and theories in this regard. In this article, different aspects related to Hamilton–Norwood scale will be explored, from its history and evolution to its impact on current society, in order to provide a broad and complete vision of this topic.
Hamilton–Norwood scale
Part of the Hamilton-Norwood classification system
SynonymsNorwood scale
PurposeUsed to classify stages of baldness

The Hamilton–Norwood scale is used to classify the stages of male pattern baldness. It is one of the widely accepted and reproducible classification system for the male pattern hair loss (androgenetic alopecia). The stages are described with a number from 1 to 7 with a type A variant for the cases with anterior involvement.

Overview

Androgenetic alopecia follows a defined pattern of hair loss, beginning with bitemporal recession of the frontal hairline. Eventually, diffuse thinning over the vertex (top) of the scalp occurs. With progression, complete hair loss in this region is common. The bald patch progressively enlarges and eventually joins the receding frontal hairline.

This measurement scale was first introduced by James Hamilton in the 1950s and later revised and updated by O'Tar Norwood in the 1970s. It is sometimes referred to as the Norwood–Hamilton scale or simply the Norwood scale.

The scale is regularly used by doctors to assess the severity of baldness, but it is not considered very reliable since examiners' conclusions can vary.

Diagnostic

Dermatologists might use the Norwood Scale on patients to assess male pattern baldness. It is especially used to check if hair loss treatments are helping patients regaining hair.

References

  1. ^ a b Guarrera M, Cardo P, Arrigo P, Rebora A (2009). "Reliability of hamilton-norwood classification". Int J Trichology. 1 (2): 120–2. doi:10.4103/0974-7753.58554. PMC 2938573. PMID 20927233.
  2. ^ Gupta, M; Mysore, V (2016). "Classifications of Patterned Hair Loss: A Review". Journal of Cutaneous and Aesthetic Surgery. 9 (1): 3–12. doi:10.4103/0974-2077.178536. PMC 4812885. PMID 27081243.
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