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Unusual darkening of the skin
Answer for the clue "Unusual darkening of the skin ", 17 letters:
hyperpigmentation
Word definitions for hyperpigmentation in dictionaries
WordNet
Word definitions in WordNet
n. unusual darkening of the skin [ant: hypopigmentation ]
Wiktionary
Word definitions in Wiktionary
n. The darkening of an area of skin or nails, caused by increased melanin.
Wikipedia
Word definitions in Wikipedia
Hyperpigmentation is the darkening of an area of skin or nails caused by increased melanin .
Usage examples of hyperpigmentation.
Anyway, basically, what a lab is going to be looking for is whether that hyperpigmentation is intracellular, as in melanocytes, which are the dark, pigmented cells that are much more concentrated in non-Caucasians, or intercellular.