habit tic [L, habitus, condition; Fr, tic] , a brief recurrent movement of a muscle group, such as a blink, grimace, or sudden head turning, that is of psychogenic rather than organic origin.
habit tic
habit tic [L, habitus, condition; Fr, tic] , a brief recurrent movement of a muscle group, such as a blink, grimace, or sudden head turning, that is of psychogenic rather than organic origin.