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Performs repetitive movements, such as rocking, spinning or hand-fapping
Develops specific routines or rituals and becomes disturbed at the slightest change
Moves constantly
May be fascinated by details of an object, such as the spinning wheels of a toy car, but doesn't understand the "big picture" of the subject
May be unusually sensitive to light, sound and touch, and yet oblivious to pain
What is a behavior symptom of autism?