chromatosis

plural chromatoses

1. medicinePigmentation, especially unusual pigmentation of human or animal tissue.

   Insofar as induced intraoral and extraoral chromatosis are concerned, there is a relative dearth of instances in which tatooing has been accomplished.

   1965, C.D. Dummett, “Induced Chromatosis: The Tattoo”, in Quarterly Journal of the National Dental Association, volume 24, page 50

   2 more examples

   […]“chromatoses corii,” which stands for transudations of coloring matters, and includes the suborders melasmata, dermatocholoses and heterochromatoses,[…]

   1887, Edward Bennet Bronson, A Study of the Considerations Relating to the Classification of Skin Diseases, page 16

   This pigmentation (chromatosis) involves in most instances more than half of the protoplasm of the cell body, and in many cells it is so great that the chromatic particles (Nissl bodies) and the nuclei of the cells are with difficulty discerned.

   1899, The American Journal of the Medical Sciences, volume 118, page 657

2. Pigmentation of tissue that normally is not pigmented.
3. Excessive pigmentation of tissue that normally is pigmented.