Table 1.
Identified organic pigments in dermatome shave biopsies obtained from 104 patients with allergic reactions in red tattoos
| Identified pigments | C.I. number | Frequency in all biopsies N = 104 | Frequency in biopsies from patients with cross‐reaction (s) N = 14 | Frequency in biopsies from patients without cross‐reaction (s) N = 90 | Pigment class | |||
|---|---|---|---|---|---|---|---|---|
| P.R. 22 | 12 315 | 36 | 35% | 3 | 21% | 33 | 37% | Azo (Naphthol AS) |
| P.R. 210a | 12 477 | 25 | 24% | 6 | 43% | 19 | 21% | Azo (Naphthol AS) |
| P.R. 170 | 12 475 | 12 | 12% | 2 | 14% | 10 | 11% | Azo (Naphthol AS) |
| P.R. 122 | 73 915 | 1 | 0.9% | 1 | 7% | 0 | 0% | Quinacridone |
| P.R. 112 | 12 370 | 1 | 0.9% | 0 | 0% | 1 | 1% | Azo (Naphthol AS) |
| P.R. 5 | 12 490 | 1 | 0.9% | 0 | 0% | 1 | 1% | Azo (Naphthol AS) |
| P.V. 23 | 51 319 | 8 | 8% | 3 | 21% | 5 | 6% | Dioxazine |
| P.V. 19 | 73 900 | 1 | 0.9% | 0 | 0% | 1 | 1% | Quinacridone |
| P.O. 13 | 21 110 | 12 | 12% | 3 | 21% | 9 | 10% | Diazo |
| P.O. 16 | 21 160 | 2 | 2% | 0 | 0% | 2 | 2% | Diazo |
| P.Y. 74 | 11 741 | 5 | 5% | 0 | 0% | 5 | 6% | Azo |
| P.Y. 151 | 13 980 | 1 | 0.9% | 1 | 7% | 1 | 1% | Azo |
| P.Y. 138 | 56 300 | 1 | 0.9% | 0 | 0% | 1 | 1% | Quinaphthalone |
| P.Y. 1 | 11 680 | 1 | 0.9% | 0 | 0% | 1 | 1% | Azo |
| P.B. 15 | 74 160 | 17 | 16% | 2 | 14% | 15 | 17% | Phthalocyanine |
| P.G. 7 | 74 260 | 10 | 10% | 1 | 7% | 9 | 10% | Phthalocyanine |
| Not identified | ‐ | 19 | 18% | 0 | 0% | 19 | 21% | ‐ |
Abbreviations: C.I., color index; P.B., Pigment Blue; P.G., Pigment Green; P.O., Pigment Orange; P.R., Pigment Red; P.V., Pigment Violet; P.Y., Pigment Yellow.
a
P.R. 210 is a mixture containing also P.R. 170.