Ataxia
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  Ataxia



Ataxia

    Ataxia is unsteady and clumsy motion of the limbs or trunk due to a failure of the fine coordination of muscle movements. The cerebellum is the center of the fine coordination of muscle movements, while the information emerging from it is carried to the muscles by the spinal cord and peripheral nerves, respectively. Therefore a disorder in either the spinal cord or in the peripheral nerves can cause ataxia.

RELATED TERMS
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Ataxia
Ataxia is unsteady and clumsy motion of the limbs or trunk due to a failure of the fine coordination of muscle movements. The cerebellum is the center of the fine coordination of muscle movements, while the information emerging from it is carried to the muscles by the spinal cord and peripheral nerves, respectively. Therefore a disorder in either the spinal cord or in the peripheral nerves can cause ataxia.

Muscle
Tissue made up of bundles of long, slender cells that contract when stimulated.

Cerebellum
A large structure consisting of two halves (hemispheres) located in the lower part of the brain; responsible for the coordination of movement and balance.

Cord
1. In anatomy, a long ropelike structure. 2. Short for the spinal cord or the umbilical cord.

Peripheral
At or near the surface of the body. Located away from the center structure.



SIMILAR TERMS
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Ataxia telangiectasia mutated
See: ATM.

Ataxia, cerebellar
See: Ataxia.

Ataxia-telangiectasia
"A progressive neurodegenerative genetic disease characterized by cerebellar ataxia (incoordination and lack of balance), ocular telangiectasia (""red eyes"" due to widening of small blood vessels in the conjunctiva), immune defects, and a predisposition to malignancy. Chromosomal breakage is a feature. Ataxia-telangiectasia (A-T) cells are abnormally sensitive to killing by ionizing radiation."

Ataxic gait
Walking that is clumsy, uncoordinated.



PREVIOUS AND NEXT TERMS
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Abscesses
A collection of pus collected in a cavity formed by the tissue on the basis of an infectious process (usually caused by bacteria or parasites) or other foreign materials (bullet wounds etc). It is a defensive reaction of the tissue to prevent the spread of infectious materials to the other parts of the body.

Arthritis
Inflammation of a joint, usually accompanied by pain, swelling, and stiffness, and resulting from infection, trauma, degenerative changes, metabolic disturbances, or other causes. Arthritis occurs in various forms, such as the arthritis associated with infections, osteoarthritis, or rheumatoid arthritis. Many forms of vasculitis can also be associated with arthritis.

Atherosclerosis
Also known as arteriosclerosis, atherosclerosis results from the accumulation of cholesterol-laden plaque in artery walls. Plaque accumulation causes a narrowing and a loss of elasticity of the arteries, sometimes referred to as hardening of the arteries.

Allergy
A major defense mounted by the body's immune system against normally harmless substances, or allergens, such as chemicals in pollen, food, bee stings, animal dander, or dust. An allergic reaction is the body's strong reaction to these substances in a person who is sensitive to them. Reactions range from mild to severe, and may include sneezing, a rash, or difficulty breathing (which can be fatal).

Amputation
Amputation is the removal of a body extremity by trauma or surgery. As a surgical measure, it is used to control pain or a disease process in the affected limb, such as malignancy or gangrene.

Ataxia

ADHD
Attention-deficit hyperactivity disorder (ADHD) is one of the most commonly diagnosed and controversial mental disorders among children, and is increasingly recognized as afflicting adults as well. Its symptoms include inattention, hyperactivity, and impulsivity.

Autism
A neurological developmental disability that results in limited cognitive abilities: the autistic individual is limited in ability to learn inductively from surrounding events. Social interactions and many kinds of conceptual learning can be strongly limited. At the same time, the autistic individual may be outstandingly good at some kinds of mental manipulations, such as, for example, arithmetical calculations.

Aneurysm
A weakness in the blood vessel wall that balloons out and may rupture at some point. Aneurysms rarely cause symptoms before the rupture, unless they are large. They do not mimic the symptoms of migraine or cluster headache. It is vital to discover them before they rupture and have catastrophic consequences such as paralysis or death.

Agoraphobia


Allergic rhinitis
Allergic rhinitis is a common allergic reaction that causes inflammation of the nose. Symptoms typically include sneezing, congestion, a runny nose, and an itchy nose. Allergic rhinitis may be seasonal or perennial.

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