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Cerebral palsy: signs, diagnosis & outlook

What Are the Symptoms of Cerebral Palsy?

Last updated 24 October 2026 · 10 min read · By Sarah M., Support Coordinator
In short

Cerebral palsy symptoms are the physical signs of a condition that affects movement, muscle tone, posture and balance. They look different for every person, and healthdirect lists stiffness or floppiness, uncontrolled movements, muscle weakness, and balance and coordination problems among them.

This guide is for parents, adults with cerebral palsy, carers and support workers in Australia. It covers early signs of cerebral palsy, how the condition can affect daily life, when to see a doctor and where support comes from. For a plain definition, see cerebral palsy explained.

Key points

  • Cerebral palsy symptoms vary widely; healthdirect says spasticity is the most common problem, but not everyone has the same signs.
  • Symptoms usually appear in the first 2 years, and diagnosis is usually confirmed by age 2.
  • See a doctor if a baby cannot hold up their head by 4 months, is not sitting up by 9 months or is not walking by 18 months.
  • If you meet the NDIS access requirements, the NDIS may fund supports that help with everyday life; your doctor and therapists can help with evidence.
Cerebral palsy symptoms at a glance
What it affectsMovement, muscle tone, posture, balance and coordination
Most common problemSpasticity, according to healthdirect
When symptoms appearUsually in the first 2 years of life
When it is usually diagnosedDiagnosis is usually confirmed by age 2
Who assesses itA doctor, such as a GP or paediatrician, who can discuss referral options
Official sourceshealthdirect, Cerebral Palsy Alliance, Royal Children’s Hospital Melbourne

What are cerebral palsy symptoms?

Cerebral palsy is a condition that affects movement, muscle tone, posture and balance. The symptoms are not the condition itself, but the ways it shows up in movement, posture and daily tasks.

Two people with the same diagnosis can look very different. One may walk with a slight limp, while another may use a wheelchair and communication supports. The table explains the main terms you will hear.

TermWhat it means
SpasticityStiff, tight muscles; healthdirect says it is the most common problem in cerebral palsy
Floppiness (low tone)Muscles that feel loose or floppy
Exaggerated reflexes or jerkingStrong or sudden movements, or jerking
Uncontrolled movementsMovements the person did not intend
Balance and coordination problemsDifficulty staying steady or coordinating the body

Signs and symptoms of cerebral palsy

These patterns are based on the symptoms healthdirect lists. Your specialist can explain which description fits you or your child.

PatternWhat you may noticeLearn more
Stiff muscles (spasticity)Stiff, tight musclesMuscle tone in cerebral palsy
Uncontrolled movementsMovements the person did not intendWhat is dyskinetic cerebral palsy
Balance and coordination problemsDifficulty staying steady or coordinating the bodyAsk your GP or physiotherapist
Swallowing, sucking or eating difficultyDifficulty with swallowing, sucking or eatingAsk your GP or speech pathologist

Mild cerebral palsy

Symptoms differ from person to person. Read more in our guide to mild cerebral palsy.

Dyskinetic cerebral palsy

See dyskinetic cerebral palsy for what families often ask.

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TQN Care support workers help with personal care, community access, respite and help around the home across Sydney, Melbourne and surrounding areas (NSW & VIC). Tell us what you need and we will call you back.

Make a referral →

Early signs of cerebral palsy in babies and toddlers

Healthdirect gives the milestones below. Trust your instincts and raise concerns early; you do not need to wait for a scheduled check.

  • A baby who cannot hold up their head by 4 months should be seen by a doctor (healthdirect).
  • A baby who is not sitting up by 9 months should be seen by a doctor.
  • A child who is not walking by 18 months should be seen by a doctor.
  • Stiffness or floppiness, exaggerated reflexes or jerking, and difficulty with swallowing, sucking or eating are also on healthdirect’s list of symptoms.

Our guide to the signs of cerebral palsy in babies covers what parents often notice first. Bring a short note of what you have seen, or short phone videos, to the appointment.

How is cerebral palsy diagnosed?

Healthdirect says diagnosis is usually confirmed by age 2. Your doctor can explain what happens next.

  1. Talk to your GP or child health nurse. Describe what you have noticed and when, so they can discuss referral to a paediatrician.
  2. See a paediatrician or specialist. They can assess development and explain the next steps.
  3. Ask about therapy referrals. Ask your doctor whether physiotherapy, occupational therapy or speech pathology could help.
  4. Keep every report together. A folder of letters and assessments saves time when you apply for supports.

Our guide on how cerebral palsy is diagnosed explains each step in more detail.

What does cerebral palsy affect? Effects and impairments

People ask what cerebral palsy affects and what the effects of cerebral palsy are in daily life. Cerebral palsy impairments can include movement, posture and eating, and each person has a different mix.

  • Movement and posture: walking, sitting, using hands and keeping balance may need aids, therapy or help from another person.
  • Eating and drinking: difficulty with swallowing, sucking or eating can affect mealtimes and may need a speech pathologist’s advice.
  • Communication: if speech or communication is a concern, ask a speech pathologist about supports.
  • Thinking and learning: abilities vary; our guide on cerebral palsy and intelligence explains why one assumption does not fit everyone.
  • Seizures: if the person has epilepsy, follow their seizure management plan; see cerebral palsy and epilepsy.

Cerebral palsy symptoms in adults and over time

Many families ask whether cerebral palsy symptoms get worse with age. The answer depends on the person, so speak to a doctor who knows their history.

  • Read whether cerebral palsy is progressive for how symptoms can change over time.
  • Our guide to cerebral palsy in adults covers support options for adults.
  • Questions about outlook are covered in cerebral palsy life expectancy, written in plain language.
  • Ask your treating team how often to review therapy and equipment.

For how treatment fits in, see treatment for cerebral palsy, and for causes see what causes cerebral palsy. If you are comparing conditions, our guide to symptoms of autism explains that condition.

Cerebral palsy symptoms and daily life at home

A few practical steps can help you and the treating team plan support at home.

  • Keep a simple diary of what the person needs help with to share with therapists and planners.
  • Ask an occupational therapist whether any bathroom, bedroom or kitchen changes could help.
  • Plan mealtimes with a speech pathologist if swallowing or eating is difficult, and follow their written plan.
  • Put the seizure management plan, medicine list and emergency contacts where everyone can find them.

Cerebral palsy symptoms: how to prepare for an appointment

A little preparation helps you get the most from a short appointment. The suggestions below suit parents, adults with cerebral palsy and carers.

  • Write down what you have noticed, when you first noticed it and whether it has changed. Dates and examples are more useful than general descriptions.
  • Take short phone videos of movements, mealtimes or play if they are easier to show than describe.
  • List your questions beforehand, such as which specialist to see next, what to expect and how long referrals usually take.
  • Bring a support person if you would like help remembering what was said, and ask the doctor to write down the next steps.
  • Ask for copies of reports and letters, and keep them in one place so they are ready for therapists and for any support applications.

If something feels wrong and you are not satisfied with the answer, you can ask for a second opinion or raise the concern again at a follow-up visit.

Cerebral palsy symptoms: respectful language and support

How we talk about cerebral palsy matters. Describe the person first and the condition second, and let them tell you what they want and need.

  • Speak to the person with cerebral palsy directly, even if a parent, carer or support worker is with them.
  • Ask before helping, and wait for an answer. Some people prefer to do things their own way and at their own pace.
  • Allow extra time for movement or communication rather than finishing sentences or tasks for the person.
  • Focus on goals, such as getting to a class, cooking a meal or visiting friends, and plan supports around them.

Cerebral palsy symptoms and the NDIS

If you meet the NDIS access requirements, the NDIS may fund supports such as therapy, equipment and help at home. Evidence from your treating team can help.

  • Ask your GP, paediatrician or specialist for a letter that describes the diagnosis and how it affects daily life.
  • Collect therapy reports from physiotherapists, occupational therapists and speech pathologists.
  • Read our guide to cerebral palsy support and the NDIS for what to include and where to find help.
  • Check the NDIA website for the current access requirements before you apply.
Looking for NDIS support at home?

TQN Care support workers help with personal care, community access, respite and help around the home across Sydney, Melbourne and surrounding areas (NSW & VIC). Tell us what you need and we will call you back.

Make a referral →

When to talk to a GP or specialist

  • Your baby cannot hold up their head by 4 months, is not sitting up by 9 months or is not walking by 18 months.
  • You notice stiffness, floppiness, jerking or unusual movements that concern you at any age.
  • Feeding is difficult, with problems swallowing, sucking or eating.
  • An adult with cerebral palsy notices new pain, tiredness or changes in how they move.
  • You are unsure what support is available and want help with referrals and paperwork.

Call 000 in an emergency, such as a seizure that does not stop or trouble breathing. If you feel overwhelmed as a carer, Lifeline is on 13 11 14.

Your next step

If cerebral palsy symptoms are part of your or your family’s life, practical help at home may be part of the picture. TQN Care support workers help with personal care, community access, respite and help around the home, always guided by the person and their plan. Explore our NDIS services or make a referral, and we will call you back to talk through what you need.

SM
Sarah M., Support CoordinatorTQN Care is a registered NDIS provider supporting people across Sydney, Melbourne and surrounding areas (NSW & VIC).
Common questions

FAQs about cerebral palsy symptoms

What does cerebral palsy look like? +

It looks different for every person. Some have stiff muscles or jerky movements, others have floppy muscles, balance problems or difficulty with eating. Some people need a wheelchair, while others walk independently. A specialist can explain what it looks like for you or your child.

What does cerebral palsy affect? +

Cerebral palsy mainly affects movement, muscle tone, posture and coordination. It can also affect swallowing and eating. The effects vary, so ask the treating team which therapy, equipment or support at home might help.

What are some symptoms of cerebral palsy? +

Healthdirect lists stiffness or floppiness, exaggerated reflexes or jerking, muscle weakness, uncontrolled movements, balance and coordination problems, and difficulty with swallowing, sucking or eating. Spasticity is the most common problem. See a doctor if you are worried about your child’s development.

How many people does cerebral palsy affect? +

For current Australian figures, see the Cerebral Palsy Alliance website. Support is available whatever the symptoms look like.

How does cerebral palsy affect a person day to day? +

It depends on the person. Support needs differ widely. A diary of what is hard each day can be useful to share with therapists and planners.

What are the early signs of cerebral palsy? +

Healthdirect says symptoms usually appear in the first 2 years. See a doctor if a baby cannot hold up their head by 4 months, is not sitting by 9 months or not walking by 18 months, or if you notice stiffness or floppiness.

References

Sources

  1. Cerebral palsy — healthdirect Australia
  2. Signs and symptoms of cerebral palsy — Cerebral Palsy Alliance
  3. Cerebral palsy (Kids Health Info fact sheet) — The Royal Children’s Hospital Melbourne
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