Skin pigmentation as a predictor of minimal phototoxic dose after oral methoxsalen

Design and evaluation of a novel portable erythema‐melanin‐meter

“…Our observations are consistent with results obtained by other groups [35][36][37][38], who have been trying to verify objectively the procedure of the skin type separation offered by the Fitzpatrick scale [35,37,[39][40][41].…”

The effect of pre‐phototest sun exposure on minimal erythema dose and minimal melanogenic dose among skin phototypes III, IV and V

“…Our skin colours correlated well with MED-UVB in all skin phototypes. 5,13,[15][16][17][18] Objective measurement of skin colours, in particular pigmentation has been shown to be better than skin phototype in predicting MED and MMD. 13,14 Our results demonstrated a good correlation between both facultative and constitutive skin colours with MED-UVB and MMD-UVB.…”

Determination of the minimal phototoxic dose and colorimetry in psoralen plus ultraviolet A radiation therapy

“…These authors suggest that skin color as measured by a colorimeter could be used in studies to evaluate pigmentation and the skin response to UVA, as well as to plan photochemotherapy without measures of MPD. Bech-Thomsen et al (52), using an instrument to measure pigmentation, observed a strong correlation between the skin pigmentation and the MPD, as well as variation of the MPD in individuals with the same apparent pigmentation. In the present study, it was observed that colorimetry seems to define skin subgroups without much relation to the phototype.…”