. . "Symptoms may include:Involuntary, purposeless, motor movements (may involve different parts of the body, such as the face, neck, shoulders, trunk, or hands)Head jerkingSquintingBlinkingShruggingGrimacingNose-twitchingAny excessively repeated movements (i.e., foot tapping, leg jerking, scratching)Some of the more complex tic behaviors associated with TD may appear purposeful, and may include the fo" . .