Signs of Cerebral Palsy by Age

How the signs of cerebral palsy appear

Cerebral palsy is usually recognized not by one dramatic symptom but by a pattern of missed milestones and unusual muscle tone that becomes clearer as a baby grows. The brain injury is present from early on, but because motor skills develop over the first two years, the signs unfold on a timeline. Knowing what to look for at each stage helps parents raise concerns early, and early intervention improves outcomes.

One important caution: every baby develops at a slightly different pace, and a single missed milestone is rarely cause for alarm. It is the pattern (several signs together, or milestones missed by a wide margin), that warrants an evaluation.

Newborn (0-3 months)

In the earliest months, signs are subtle and relate mostly to muscle tone and feeding:

• Feeling unusually stiff (hypertonia) or unusually floppy (hypotonia)
• Poor head control: the head lags markedly when the baby is pulled to sitting, beyond what is expected for age
• Difficulty feeding, sucking, or swallowing; frequent gagging or coughing during feeds
• Excessive irritability or a high-pitched cry, or the opposite: unusual drowsiness
• Trembling or stiff, jittery movements of the arms and legs
• Favoring one side of the body, or keeping the hands tightly fisted

3 to 6 months

• Head still flops backward when picked up
• Does not roll over in either direction
• Stiff or scissored legs, or legs that cross when picked up
• Reaches with only one hand while keeping the other fisted
• Does not bring hands together or to the mouth
• Overextended or arched back and neck, pushing away when cuddled

6 to 12 months

• Cannot sit without support by around 9 months
• Does not crawl, or crawls in a lopsided way: pushing off with one hand and leg while dragging the other side
• A clear, persistent hand preference before 12 months (typically hand preference does not emerge until 18-24 months, so early handedness can signal weakness on one side)
• Cannot bear weight on the legs when held upright, or bears weight only on tiptoes with stiff legs
• Difficulty grasping and passing objects from hand to hand

Toddler (12-24 months and beyond)

• Not pulling to stand or walking by around 18 months
• Walking on the toes, with a crouched gait, or with a scissoring pattern of the legs
• Persistent stiffness or, less often, floppiness affecting balance and coordination
• Marked asymmetry: using one side of the body far more than the other
• Delays in fine-motor skills such as stacking blocks or self-feeding
• Continued difficulty with chewing, swallowing, or speech

Red flags at any age

When to ask for an evaluation

Trust your observations. If your baby shows several of the signs above, misses milestones by a wide margin, or if your gut tells you something is off with how your child moves, ask your pediatrician directly for a developmental evaluation and, if warranted, a referral to a pediatric neurologist or a developmental specialist. In the United States, every state offers a free Early Intervention program for children under three. You can request an evaluation yourself, without waiting for a referral.

Early diagnosis matters: therapy started in the first months of life takes advantage of the young brain’s ability to reorganize, and it improves long-term function. It is always reasonable to ask for a closer look. Our how cerebral palsy is diagnosed page explains what an evaluation involves.

Why the diagnosis timeline matters later

When early signs were documented, or when concerns were raised and dismissed, those notes become part of the record. If a child’s cerebral palsy turns out to be linked to a preventable birth injury, the timing of the signs and the delivery history together help medical experts connect the injury to its cause. See why cerebral palsy happens and, for the legal picture, can you sue for cerebral palsy. Filing deadlines vary by state: see our statute of limitations guide.

Where a case is handled depends on where the care occurred: Banville Law attorneys are licensed in New York and Washington, D.C.; The Weitz Firm attorneys are licensed in Pennsylvania and New Jersey; elsewhere, the alliance connects families with its vetted network of local birth injury attorneys.

Frequently asked questions

What are the earliest signs of cerebral palsy in a newborn?

The earliest signs relate to muscle tone and feeding: a baby who feels unusually stiff or floppy, has poor head control, struggles to suck or swallow, or holds the hands tightly fisted. These are subtle and are best judged as a pattern rather than in isolation.

At what age is cerebral palsy usually diagnosed?

Most children are diagnosed in the first two years of life. Milder cases may not be confirmed until age three to five, when subtle coordination differences become clearer. Newer tools allow accurate diagnosis before six months in some infants.

Is early hand preference a sign of cerebral palsy?

It can be. Strong, consistent hand preference before 12 months may indicate weakness on the opposite side of the body. Typical handedness usually does not emerge until 18 to 24 months.

What should I do if I notice these signs?

Ask your pediatrician for a developmental evaluation, and consider requesting a free Early Intervention assessment, which you can do yourself for a child under three. Early therapy improves outcomes.

Sources

This page is for general education and is not medical advice. Medical facts above are drawn from the cited primary sources; legal statements reflect the reviewing attorneys’ professional experience. Always consult your child’s physician about medical concerns.