rapid canities

rap·id ca·nit·i·es

whitening of hair overnight or over a few days; in the latter case, may be seen in alopecia areata, when surviving pigmented hairs are preferentially shed from gray hair.

rap·id ca·ni·ti·es

(rap'id kă-nish'ē-ēz) Whitening of the hair overnight or over a few days; in the latter case, may be seen in alopecia areata, when surviving pigmented hairs are preferentially shed from gray hair.