Jerky bodily movement is a condition in which a person performs rapid motions that they are unable to control and serve no function. These motions disrupt the individual's usual movement or posture. They may be caused by certain diseases, disorders, or conditions. People who suffer from jerkiness often shake their head from side to side when trying to keep track of things, such as while talking on the phone. They may also tremble all over when feeling anxious or afraid. Finally, people with this problem may jump when excited or angry. The cause of jerkiness is not known for certain, but it is thought to be related to problems with the brain controlling the body. Doctors use different terms for these problems including ballismus, chorea, tics, and tremors. Jerkiness can be very disturbing for people who have it and can affect their work and other activities of daily life. There are several treatments available for jerkiness, depending on the cause of the problem. If disease is causing the jerkiness, doctors may suggest medications to treat the disease. Otherwise, if the jerkiness is due to emotional stress, doctors may advise patients to try relaxation techniques or talk therapy sessions with a therapist. In most cases, jerkiness goes away on its own after about one year.