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Cerebral Palsy

What is cerebral palsy?

Cerebral palsy (CP) is a broad term that describes a group of neurological (brain) disorders. It is a life-long condition that affects the communication between the brain and the muscles, causing a permanent state of uncoordinated movement and posturing. CP may result from several problems, such as lack of oxygen to the brain, genetic conditions, infections, brain hemorrhage, severe cases of jaundice, and injury to the head.

What causes cerebral palsy?

Many cases of CP have unknown causes. The disorder occurs when there is abnormal development or damage to areas in the brain that control motor function. It occurs in approximately three out of every 1,000 live births. Risk factors for CP include the following:

  • Prematurity

  • Blood clotting disorders

  • Very low birthweight (especially in babies weighing less than 3.3 lbs.)

  • Viruses

  • Chemical/substance abuse during pregnancy

  • Infection

  • Bleeding in the brain

  • Trauma

  • Complications of labor and delivery (Rarer than people believe, it only appears to be the cause in 5-10% of cases.)

What are the symptoms of cerebral palsy?

The following are the most common symptoms of CP. However, each child may experience symptoms differently. The child may have muscle weakness, poor motor control, or have shaking, also called spasticity, of the arms or legs. Muscle stiffness in the form of stiff legs or clenched fists may also be seen. Cerebral palsy is classified according to the kind of motor function the child may have, including the following:

  • Spastic diplegia ("di" - means two). Spastic movements of the arms or legs; Diplegia is also called paraplegia.

  • Spastic quadriplegia ("quad" means four). Spastic movements in all four limbs (arms and legs)

  • Spastic hemiplegia ("hemi" means half). Spasticity affecting one half, or side, of the body (such as right arm and right leg)

  • Spastic double hemiplegia. Spasticity in both sides of the body, but the amount of shaking is different when comparing the right side to the left side

  • Athetoid (or dyskinetic). Involuntary (unable to control), purposeless, and rigid movement

  • Ataxic. Affects balance, leading to an unsteady gait, and motions, which require fine coordination, such as writing

Children with CP may have additional problems, including the following:

  • Seizures

  • Vision, hearing, or speech problems

  • Learning disabilities and behavior problems

  • Mental retardation

  • Respiratory problems

  • Bowel and bladder problems

  • Bone abnormalities, including scoliosis (a lateral, or sideways, curvature and rotation of the back bones, giving the appearance that the person is leaning to one side)

Babies with CP are often slow to reach developmental milestones, such as learning to roll over, sit, crawl, or walk. They may also have certain reflexes present that normally disappear in early infancy. The symptoms of CP may resemble other conditions. Always consult your child's doctor for a diagnosis.

How is cerebral palsy diagnosed?

The diagnosis of CP is made with a physical examination. During the examination, the doctor obtains a complete prenatal and birth history of the child. The diagnosis of CP is not usually made until the child is at least 6 to12 months old. This is the time when the child should be achieving developmental milestones, such as walking, and hand and head control. However, approximately half of the children suspected to have CP at 12 months appear to grow out of it by age 2. Diagnostic tests may include the following:

  • Neurological examination. This is to evaluate reflexes and brain and motor function.

  • X-rays. A diagnostic test which uses invisible electromagnetic energy beams to produce images of internal tissues, bones, and organs onto film.

  • Feeding studies

  • Electroencephalogram (EEG). A procedure that records the brain's continuous, electrical activity by means of electrodes attached to the scalp.

  • Blood tests

  • Gait lab analysis. This is to evaluate the walking pattern of the child.

  • Magnetic resonance imaging (MRI). A diagnostic procedure that uses a combination of large magnets, radiofrequencies, and a computer to produce detailed images of organs and structures within the body.

  • Computed tomography scan (also called CAT or CT scan). A diagnostic imaging procedure that uses a combination of X-rays and computer technology to produce horizontal, or axial, images (often called slices) of the body. A CT scan shows detailed images of any part of the body, including the bones, muscles, fat, and organs. CT scans are more detailed than general X-rays.

  • Genetic studies. Diagnostic tests that evaluate for conditions that have a tendency to run in families.

  • Metabolic tests. Diagnostic tests that evaluate the absence or lack of a specific enzyme (for example, amino acids, vitamins, carbohydrates) that are necessary to maintain the normal chemical function of the body.

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