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Early Infancy (0-3 Months)
If your baby does not do the following:
- Turn to a sudden noise or familiar voice.
- Smile or show other facial expressions.
- Follow objects with his or her eyes.
Also if your baby exhibits the following behavior:
- Excessive lethargy or irritability
- High pitched cry
- Poor head control
- Weak suck, tongue thrust, tonic bite
- Oral hypersensitivity
- Decreased interest in surroundings
- Stiff or floppy posture
- Abnormal or prolonged reflexes (see symptoms of cerebral palsy)
Later Infancy
Inability to perform certain motor skills :
- Control hand grasp by 3 months
- Hold his or her head straight by 5 months
- Lift head up when pulled from a laying flat position to a sitting position by 5 months
- Roll over by 6 months
- Baby does not sit without support at 8 months
Also if your baby exhibits the following abnormal developmental pattern
- Hand preference before 12 months
- Excessive arching of back
- Log rolling
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