acanthosis nigricans

== English == === Etymology === Via Latin ultimately from Ancient Greek ἄκανθος (ákanthos, “thorny flower”) + -ωσις (-ōsis, “state, abnormal condition, or action”) + Latin nigricans (“blackish”). === Pronunciation === (US) IPA(key): /æˌkænˈθoʊ.sɪs/ + IPA(key): /ˈnɪɡ.ɹɪˌkænz/, /ˈnaɪɡ.ɹɪˌkænz/ === Noun === acanthosis nigricans (uncountable) (pathology) A skin sign often associated with insulin resistance and type 2 diabetes exhibiting velvety, thickened, and darkened skin and skin tags, often occurring in skin folds and the axillae. === References ===