Fitzpatrick Scale
A six-point numerical classification system for human skin colour based on its response to ultraviolet (UV) radiation, ranging from Type I (always burns, never tans) to Type VI (never burns, deeply pigmented).
Full Definition
The Fitzpatrick Scale, developed by dermatologist Thomas B. Fitzpatrick in 1975, categorises skin phototypes from I to VI, correlating with melanin content and UV response. It is widely used in dermatological literature to stratify patients for phototherapy protocols, sunscreen recommendations, and clinical trial enrolment. Editors must render the skin type designations as Roman numerals (Type I through Type VI), not Arabic numerals, and always capitalise 'Fitzpatrick Scale' and 'Type.' The scale is sometimes called the Fitzpatrick Skin Type or Fitzpatrick Phototype in various publications.
Usage
Usage note: Skin type designations must use Roman numerals (Type I–VI). Do not write 'Fitzpatrick type 2'; the correct form is 'Fitzpatrick Type II'. Always capitalise both words of the proper noun.
In Context
- "Patients with Fitzpatrick Scale Type I or II were excluded from the broadband UVB arm of the study." — Clinical trial protocol
- "The editor corrected 'Fitzpatrick type 4' to 'Fitzpatrick Type IV' throughout the manuscript." — Peer-review copy-editing