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What is it?
Cerebral palsy the name for a group of
movement disorders caused by an injury to the
brain either during pregnancy, during birth,
shortly after birth, or before age 5. Children
with cerebral palsy have difficulty coordinating
muscle movement because nerve cells in the motor
control centers of the brain are damaged and
can’t signal the appropriate muscles. Cerebral
palsy is not a disease and symptoms do not
steadily worsen as the child gets older. For
this reason, it is also called static
encephalopathy. Static means it stays the same;
encephalopathy refers to a disorder of the
brain.
Who gets it?
Cerebral palsy affects 2 to 6 of every 1,000
infants born in the United States each year,
making it the most common handicapping disorder.
It is 10 times more common in premature infants.
It is also more likely to occur in full term,
but very small infants.
What causes it?
Cerebral palsy is not an inherited disorder;
it is caused by injury to the brain. In many
cases, doctors are unable to determine what
causes the brain injury. However, known causes
that affect the brain of the fetus or newborn
include a poor supply of oxygen to the brain
during development or during delivery; premature
birth; difficult labor or traumatic delivery;
early separation of the placenta or umbilical
cord damage; mother and baby having different
blood types; and extremely high bilirubin levels
that are untreated. Cerebral palsy can be caused
during pregnancy if the mother develops an
infection, such as rubella or HIV; abuses drugs
or alcohol; contracts the herpes virus; develops
toxoplasmosis from exposure to cat feces or
undercooked meat; is anemic; or suffers physical
trauma that affects the infant. During the first
five years of life, cerebral palsy can be caused
by an infection that affects the brain, such as
meningitis or encephalitis; severe convulsions;
head trauma; severe dehydration, and exposure to
toxins. However, approximately 90 percent of all
cases of cerebral palsy are caused by brain
injury during the prenatal period (before labor
begins).
What are the symptoms?
The symptoms of cerebral palsy are usually
not noticeable at birth. However, as children
with cerebral palsy develop they do not meet
normal developmental milestones, such as sitting
unsupported or crawling, within predictable
times because the muscles do not function
normally. The symptoms of cerebral palsy range
from mild clumsiness to severe contortions of
the arms and legs. Cerebral palsy is classified
into five main types, depending upon the nature
of the movement disorder and the pattern of the
limbs involved.
Cerebral palsy classification:
- Spastic. Symptoms include stiff, weak
muscles; abnormal posture; and poor fine motor
control.
- Athetoid. Symptoms include
spontaneous, slow muscle movements.
- Hypotonic. Symptoms include floppy
muscles.
- Ataxic. Symptoms include poor
coordination and balance, with shaky movements.
- Dystonic. Two of the above types,
usually spastic and athetoid, are mixed. This
type occurs in many children.
The pattern of the limbs involved is
classified as hemiplegia, which affects the arm
and leg on only one side of the body; diplegia,
which affects mainly both legs; and
quadriplegia, which affects both arms and both
legs. So, a child could have spastic diplegia,
or ataxic hemiplegia.
Some children with cerebral palsy may also
have seizures; speech, vision, and hearing
problems; learning disabilities; and attention
deficit and/or hyperactivity disorder
(ADD/ADHD). Two thirds of all cases have some
degree of mental retardation. These conditions
are not necessarily a component of cerebral
palsy, but result from the effect of brain
abnormalities on other areas of brain function.
Some symptoms of cerebral palsy can cause
additional complications. For example, spastic
muscle movement can cause orthopedic problems,
such as hip dislocation, curvature of the spine,
or shortened muscles (contractures). Drooling,
cavities, and gum disease are more common in
people with cerebral palsy because of tightness
in the mouth and jaw and difficulty with
coordination. Constipation is also common.
How is it diagnosed?
Cerebral palsy is usually difficult to detect
during early infancy. If your doctor notices
problems with muscle development, spasticity, or
poor coordination, he or she will carefully
monitor your child’s development. While there is
no laboratory test to identify cerebral palsy,
your doctor may order studies such as computed
tomography (CT) or magnetic resonance imaging
(MRI) of the brain, blood tests, and tests that
involve electrical stimulation of the muscles to
rule out any other disorders with symptoms
similar to cerebral palsy.
What is the treatment?
There is currently no cure for cerebral
palsy. The goal of treatment is to make your
child as independent as possible. Physical
therapy will help keep muscles stretched and
improve balance and muscle control, Orthopedic
surgery may be necessary for the child to be
able to walk with the aid of braces or crutches.
Surgery may also be needed to correct vision
problems. Hearing problems are treated with
hearing aids. Speech therapy may help make your
child easier to understand and improve eating
problems. Children with severe speech
difficulties can be taught to use computers and
picture boards to communicate. Children with
seizures can take anticonvulsant drugs, which
can also help with spastic muscle movements.
Spasticity can also be treated with muscle
relaxing drugs. One such drug, baclofen, can be
delivered at regular intervals through a pump
implanted under the skin. Many children with
cerebral palsy are able to attend regular
schools, which can also help encourage
independence. Occupational therapy is also an
important component of treatment that helps
children with cerebral palsy become
self-sufficient adults. Because the symptoms of
cerebral palsy can cause behavioral and
emotional problems, many children benefit from
counseling or behavior therapy. Massage therapy
may also provide relief to children and adults
with painful muscle contractions. Good
nutrition, regular visits to the medical
specialists involved in your child’s treatment,
and understanding are important components of
successful treatment. While cerebral palsy is
not fatal, it can affect a person’s lifespan in
more severe cases. However, most children with
cerebral palsy live into adulthood.

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