You searched for: “acroleukopathies
acroleukopathy (s) (noun), acroleukopathies (pl)
A hereditary disorder of white patches or lack of typical skin pigmentation on the extremities (fingers, toes, etc.): From childhood on, Helen was self conscious of the acroleukopathy on her arms so she always wore long sleeves to cover them so people wouldn't stare at her.