The common finding in cerebral palsy is the developmental delay of motor skills, such as reaching, sitting, rolling, crawling, walking and so on. In addition, there may be associated defects, such as seizures, speech disorders, hearing impairments, visual problems and mental retardations.
Cerebral Palsy can be divided into four categories: spastic, athetoid, ataxic and mixed forms. These classifications reflect the type of movement disturbance displayed by the patient.
Spastic CP is the most common type. It afflicts somewhere between half and three-quarters of all patients with cerebral palsy, causing the muscles to be stiff and permanently contracted. Doctors often further subdivide spastic cerebral palsy into one of five types, describing the limbs that are affected. These names combine a Latin prefix describing the affected limbs with the term plegia (or sometimes "paresis"), meaning paralyzed or weak:
- diplegia affects either both arms or both legs;
- hemiplegia affects the limbs on only one side of the body;
- quadrapelgia affects all the limbs;
- monoplegia affects only one limb; and
- triplegia affects three limbs.
Children with spastic quadriplegia have other problems due to extensive brain damage. These include swallowing difficulties, speech abnormalities, visual impairment, hearing impairment, intellectual dysfunction and seizures.
Athetoid cerebral palsy occurs in about 20% of the cases. Symptoms include:
- Loss of control and fluctuation of muscle tone including facial muscles (twisting, jerking, grimacing, speech difficulty)
- Uncontrolled movements -- more severe during stress, and disappear entirely during sleep.
Ataxic cerebral palsy accounts for about 5 to 10% of all cases, and is characterized by an unsteady gait (ataxia), tremors and difficulty with fine movements resulting from a loss of balance and coordination. |
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