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Step 1
Observe that certain muscles are stiff and weak.
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Step 2
Note that areas of stiffness may vary. It can occur primarily in both legs, which is known as diplegia. Stiff movement and/or weakness in one arm and one leg on the same side is called hemiplegia. And quadriplegia results in weak and stiff muscles in both arms and legs.
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Step 3
Notice that walking is affected. People with this type of cerebral palsy usually have a staggering walk or what is known as a "scissors" type of gait.
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Step 1
Note that the affected person lacks control over some voluntary muscles.
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Step 2
Observe possible tremors.
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Step 3
Note twisting motions.
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Step 1
Observe a combination of symptoms, both spastic and athetotic.
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Step 2
Note that the person may also have diplegia, hemiplegia or quadriplegia.







