Fitzpatrick Scale
Pronunciation: fits-PAT-rik SKAYL
A six-point classification system used in dermatology to categorise human skin phototypes based on melanin content and response to ultraviolet radiation.
Full Definition
The Fitzpatrick Scale, developed by dermatologist Thomas B. Fitzpatrick in 1975, classifies skin into six phototypes (I–VI) ranging from very fair skin that always burns and never tans (Type I) to very dark skin that never burns (Type VI). In cosmetic dermatology, it is used to assess patient suitability for laser treatments, chemical peels, and light-based therapies, as higher phototypes carry greater risk of post-inflammatory hyperpigmentation. The scale is properly referred to as the 'Fitzpatrick Skin Type' or 'Fitzpatrick Phototype' scale; editors should capitalise both 'Fitzpatrick' and 'Scale' as they form a proper noun. Roman numerals are conventionally used for the six types.
Usage
Usage note: Always capitalise 'Fitzpatrick'. Roman numerals (I–VI) are standard; Arabic numerals are non-standard in this context.
In Context
- "The laser protocol was adjusted based on the patient's Fitzpatrick Scale Type IV classification to minimize hyperpigmentation risk." — Clinical protocol document
- "Editors should verify that Fitzpatrick phototype numerals are presented in Roman, not Arabic, format." — Editorial style guide