How do you know if your baby has CP?

CP can be different in each child. Some children have mild CP. They may have some awkward body movements and need little or no special help. Other children have more serious CP. They may need a lot of special care their whole lives. CP doesn’t get worse over time, but its symptoms can change.
Some but not all babies with CP often have developmental delays. This means your child doesn't reach developmental milestones when expected. A developmental milestone is a skill or activity that most children can do at a certain age. Milestones include sitting, walking, talking, having social skills and having thinking skills. Tell your child’s health care provider if you notice any of these signs in your baby at these ages:
Younger than 6 months
His head falls back when you pick him up from lying on his back.
He feels stiff or floppy.
He seems to push away when you hold him.
His legs get stiff legs and cross or “scissor” when you pick him up.
Older than 6 months
He doesn't roll over.
He can’t bring his hands together.
He has trouble bringing his hands to his mouth.
He reaches with only one hand while keeping his other hand in a fist.
Older than 10 months
He crawls by pushing off with one hand and one leg while dragging the other hand and leg.
He scoots around on his bottom or hops on his knees, but does not crawl on all fours.
Older than 1 year
He can’t crawl.

He can’t stand up with support.