pigmentation
🇺🇸
/ˌpɪɡmenˈteɪʃn/
🇬🇧
/ˌpɪɡmenˈteɪʃn/
Coloring in parts of the body, like skin or hair, caused by pigments.
The doctor noticed a change in the patient's skin pigmentation after the treatment.
医生注意到治疗后病人皮肤色素沉着的变化。