Dysmetria
Dysmetria
Dysmetria (pronounced dis-me-tree-uh) is a medical term that refers to a lack of coordination of movement typified by the undershoot or overshoot of intended position with the hand, arm, leg, or eye. It is a type of ataxia.
Etymology
The term "Dysmetria" comes from the Greek words "dys" meaning "bad", and "metron" meaning "measure".
Definition
Dysmetria is a condition characterized by a person's inability to judge the distance or range of a movement. It is often described as an inability to control the range of a movement and the force of muscular activity.
Symptoms
Symptoms of dysmetria include:
- Overshooting or undershooting target objects
- Difficulty performing rapid alternating movements
- Difficulty with fine motor tasks
- Poor depth perception
Causes
Dysmetria is often caused by lesions in the cerebellum, a part of the brain that is responsible for coordinating voluntary movements. It can also be caused by conditions such as multiple sclerosis, stroke, brain tumor, or alcoholism.
Treatment
Treatment for dysmetria typically involves addressing the underlying cause of the condition. This may include medications, physical therapy, or surgery, depending on the cause.
Related Terms
- Ataxia: A neurological sign consisting of lack of voluntary coordination of muscle movements.
- Cerebellum: The part of the brain at the back of the skull in vertebrates, which coordinates and regulates muscular activity.
- Multiple Sclerosis: A chronic disease that attacks the central nervous system, (brain, spinal cord, and optic nerves).
- Stroke: A condition where the blood supply to part of the brain is cut off, causing a lack of oxygen and the death of brain cells.
- Brain Tumor: A mass or growth of abnormal cells in the brain.
- Alcoholism: A chronic disease characterized by uncontrolled drinking and preoccupation with alcohol.
External links
- Medical encyclopedia article on Dysmetria
- Wikipedia's article - Dysmetria
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