Gait and posture disturbances: Shuffling gait[1] is characterized by short steps, with feet barely leaving the ground. Small obstacles tend to cause the patient to trip. Decreased arm-swing[1] Turning 'en bloc, rather than the usual twisting of the neck and trunk and pivoting on the toes, is when PD patients keep their necks and trunks rigid, requiring multiple small steps to accomplish a turn.