At what age do adults with CP typically notice their condition worsening?

Research consistently shows that adults with CP begin to experience significant functional decline in their mid-30s to early 40s, though this varies considerably by CP type and severity, and by how well the condition was managed in childhood and adolescence. Adults who walked independently in youth and received little specialist CP care often notice walking becoming harder, more painful, and more tiring between ages 35 and 45. Hip and back pain tends to emerge or worsen during this period. Fatigue — the single most commonly reported issue by adults with CP — often becomes functionally limiting.

Is there anything that can slow down the progression of CP complications?

Yes — and the earlier these are started, the more effective they are. Regular physiotherapy maintaining range of motion and strength; orthotics preventing contractures between therapy sessions; hip surveillance X-rays every 6 to 12 months for children with spastic CP to catch early subluxation; botulinum toxin injections targeting specific spastic muscles where appropriate; and spasticity surgery — particularly SFDM — are all tools with evidence behind them for slowing or preventing secondary complications. The common thread is: don't wait for the secondary changes to become established before addressing their cause.

Does Cerebral Palsy Get Worse Over Time? | CP Clinic

Understanding CP 12 min read

Does Cerebral Palsy Get Worse Over Time?

Q: Does cerebral palsy get worse over time?

The brain injury that causes cerebral palsy is stable and doesn't worsen. This is what doctors mean when they say CP is 'non-progressive.' But the effects of living with that injury do accumulate. Without adequate treatment, spastic muscles pull progressively harder on joints, causing contractures, hip dislocation, scoliosis, and chronic pain. Fatigue increases as the body compensates over decades. Walking ability that was present in childhood often deteriorates in the 30s and 40s. So the truthful answer is: the brain damage doesn't get worse, but the body's response to it can — and in many cases does, without proactive management.

Q: Will my child with CP get better over time?

During childhood, with appropriate therapy and — where indicated — surgical intervention, many children with CP show meaningful functional improvement. The brain is at its most plastic during the first two years of life, and intensive, targeted therapy during this window produces real gains. Some children who couldn't walk learn to walk; hand function improves; communication develops. These gains are real, but they require active effort. They don't happen automatically with age. Without good treatment, function tends to plateau or decline. With good treatment, the trajectory is more positive — though 'better' looks different for every child depending on the severity and pattern of their CP.

Q: Why does CP seem to get worse in adulthood?

Several processes converge in adulthood to produce what researchers call 'CP ageing.' First, the energy cost of compensating for abnormal movement patterns accumulates — adults with CP use two to three times more energy to walk than unaffected people, and this debt compounds over decades, producing progressive fatigue. Second, the mechanical strain of asymmetric movement damages joints over time, causing chronic pain in hips, knees, and the spine. Third, the muscles and tendons on the 'stronger' side develop overuse injuries from decades of compensating. Finally, untreated spasticity causes progressive contractures, sometimes leading to joint dislocation and spinal deformity. None of this is inevitable — proactive management, particularly addressing spasticity before these secondary changes become established, can significantly slow the process.

Q: What causes the loss of walking ability in CP?

Several factors contribute. Progressive contractures — shortening of muscles and tendons from chronic spasticity — gradually reduce the available range of motion at the hip, knee, and ankle, making walking mechanically harder. Hip pain from progressive subluxation (partial dislocation) makes walking too painful to sustain. Scoliosis shifts the body's centre of gravity, making balance harder. And the cumulative fatigue of walking with an abnormal gait pattern — which requires two to three times the energy of normal walking — eventually outpaces the person's reserves. Not all of this is inevitable. Early spasticity treatment, hip surveillance, and physiotherapy can significantly delay or in some cases prevent walking loss.

Q: Can surgery prevent CP from getting worse?

Surgery that reduces spasticity — particularly minimally invasive SFDM surgery — directly addresses the mechanism by which many secondary complications develop. By reducing the chronic muscle tension that pulls on joints, causes contractures, and strains the spine, surgery can slow or prevent the progressive joint damage, scoliosis, and walking loss that otherwise accumulate. The earlier this is done after the minimum surgical age (24 months for SFDM), the more of the secondary damage trajectory it prevents. Surgery isn't a guarantee against all future complications, but it substantially changes the body's long-term trajectory compared to physiotherapy alone.

Most families ask this question at some point, usually quietly and often with dread. Doctors tend to answer it with “CP is non-progressive” and move on. That answer is technically correct and practically incomplete. Here’s the honest version.

Written by CP Clinic Medical Team Tovmed Medical Center, Vinnytsia, Ukraine

Medically reviewed by Prof. Vigein Tovmasian PhD · Orthopedic Surgeon · Honorary Doctor of Ukraine

The short answer

The direct answer

The brain injury that causes CP is stable. It doesn’t get worse. But the body’s response to living with that injury for years and decades does — and for many people, particularly those who haven’t received adequate treatment, the physical effects become significantly more limiting over time.

These are two different things. The damage to the brain that happened — during pregnancy, around birth, or in early infancy — is done and doesn’t change. What does change is everything downstream of that damage: the muscles, joints, bones, and energy reserves that have been working around it for a lifetime.

The gap between these two statements is where most of the confusion lives. And it’s why some families are told “CP doesn’t get worse” and then watch their child or themselves experience real functional decline over the years, feeling like something must have been missed or misrepresented.

Nothing was missed. The answer just wasn’t complete.

What “non-progressive” actually means — and what it doesn’t

When doctors say cerebral palsy is non-progressive, they mean the underlying neurological injury is stable. A new scan taken today will show the same pattern of brain abnormality — or normal imaging with functional impairment — as a scan taken years ago. The injury itself isn’t spreading. The brain isn’t degenerating the way it does in conditions like multiple sclerosis or Parkinson’s.

This matters, because it means CP is fundamentally different from progressive neurological conditions. Treatment works. Development happens. Skills can be built. The brain is stable enough to learn from intensive, targeted therapy in a way that a degenerating brain cannot.

What “non-progressive brain injury” doesn’t mean is that the person’s physical situation stays the same. The brain sends abnormal signals to the muscles. The muscles respond by being too tight, too weak, or both. Over months and years, this produces real physical changes in the body — changes that get worse over time precisely because the abnormal signal never stops.

A useful analogy: a river with a blocked tributary doesn’t have a worsening flood source. But the water that has already backed up keeps slowly eroding the banks downstream. Stop the erosion early enough and you preserve the banks. Wait long enough without intervention and the damage becomes structural and much harder to reverse.

That’s what happens in untreated spastic CP. The brain signal (the blocked tributary) doesn’t change. But the secondary damage to muscles, tendons, joints, and bones (the eroding banks) accumulates steadily.

What genuinely changes over time

These are the secondary complications that accumulate in CP. They’re not inevitable, but they’re common without proactive management.

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Joint contractures

Spastic muscles pull continuously on joint structures. Over months and years, the muscles and tendons shorten. Hips, knees, ankles, and elbows lose their full range of motion — and once that’s gone, regaining it is difficult.

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Chronic pain

Joint pain from years of abnormal loading. Muscle pain from chronic tension. Back pain from asymmetric posture and movement. Pain becomes the dominant quality-of-life issue for many adults with CP, often starting in the 30s.

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Hip subluxation and dislocation

Spastic hip muscles pull the femoral head out of its socket progressively over time. Without hip surveillance, this can reach full dislocation — painful, damaging, and requiring major surgery to correct. It’s largely preventable with monitoring.

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Scoliosis

Asymmetric muscle tension pulls the spine sideways over years. Scoliosis is common in spastic quadriplegia in particular and progresses during growth spurts. It can reach degrees that compress organs and cause significant pain.

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Fatigue

Walking with an abnormal gait uses two to three times the energy of normal walking. This energy debt builds over decades. Adults with CP often hit a point in their 30s or 40s where the fatigue becomes functionally limiting in ways it wasn’t before.

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Overuse on the stronger side

When one side of the body compensates for the other for 30 or 40 years, it accumulates injuries: shoulder impingement, tendinitis, knee damage. The “good” limbs don’t stay good indefinitely without care.

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Loss of walking ability

Many adults who walked independently in childhood find walking becomes harder, more painful, and eventually unsustainable through middle age. This isn’t the brain injury progressing — it’s the accumulated musculoskeletal consequences of untreated spasticity catching up.

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Mental health and mood

The combination of chronic pain, fatigue, functional decline, and reduced independence takes a real psychological toll. Depression and anxiety rates in adults with CP are substantially higher than in the general population — connected closely to pain and declining function, not just to having CP.

How CP typically unfolds across life stages

The trajectory isn’t the same for everyone. It depends on the type and severity of CP, the quality of treatment received, and factors like whether spasticity was addressed surgically or managed conservatively. But a general pattern emerges from the research.

Birth to 2 years

The window of greatest opportunityThe brain is at its most plastic. Intensive therapy during this period produces more functional change than any equivalent effort later. A diagnosis at 12 months with treatment starting immediately has a better functional outlook than the same diagnosis at 3 years with delayed treatment.

Ages 2–12

Progress, plateau, or deterioration — depending on treatmentChildren receiving good physiotherapy, orthotics, and (from age 2) surgical spasticity treatment when indicated tend to show meaningful functional gains. Without treatment, the secondary complications begin accumulating: contractures develop, hip surveillance shows progressive subluxation, scoliosis begins in severe cases.

Adolescence

Growth spurts accelerate secondary changesRapid bone growth during puberty stretches muscles that are already tight, worsening contractures and scoliosis quickly. Hip dislocation risk peaks during this period. It’s a time when physiotherapy and monitoring become more, not less, important — but many families reduce therapy attendance as children become busier.

20s–early 30s

The honeymoon period for many — but changes buildingMany adults with mild to moderate CP function reasonably well in their 20s. The secondary complications are there but not yet dominant. This decade is actually a good time for surgical intervention — before the accumulated joint damage makes recovery harder and the secondary changes more established.

Mid-30s onwards

When the bill arrivesFor many adults with CP who received limited specialist care, the mid-30s is when fatigue becomes limiting, pain becomes daily, and walking begins to feel genuinely hard. Research identifies this decade as the typical inflection point for functional decline. It’s not too late to intervene — but the intervention options are more limited than they were earlier, and recovery takes longer.

When children seem to get worse

Some parents bring their child for assessment and describe the child’s movement as worse than it was at diagnosis. This happens, and it’s understandably alarming. Usually it isn’t the brain injury progressing — it’s one of three things.

Spasticity becomes more visible with development

A baby who isn’t yet attempting to stand or walk doesn’t reveal the full extent of lower limb spasticity. As developmental expectations rise and the child attempts more complex movements, spasticity that was present but quiet becomes obvious. A two-year-old trying to take steps shows you the calf spasticity that made little impression at six months. This isn’t progression. It’s the same spasticity, now being asked to do more.

Growth spurts create temporary worsening

When bones grow quickly, the surrounding muscles — already tight — get stretched further. Gait can deteriorate temporarily and quite significantly during growth spurts, particularly in the legs. Most families whose child “got worse” during ages 10 to 14 are seeing this. It’s real, it’s distressing, and it does need managing, but it’s not the underlying condition worsening.

Early contractures are developing

If the secondary changes described above are beginning — particularly hip subluxation or ankle contracture — these will produce visible functional decline. This is the scenario that warrants the most urgent attention, because it represents actual physical change that needs treatment, not just developmental context.

If your child’s function seems to be declining, the right response is to seek an assessment from a CP specialist — not to assume it’s normal development or to assume the worst. The cause matters, because different causes need different responses.

What slows the secondary complications down

This is the part most families don’t hear clearly enough. The progression of secondary complications in CP is not inevitable. It’s the result of chronic spasticity acting on the body over time without sufficient counterforce. Apply the counterforce early enough and consistently enough, and the trajectory changes.

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Regular physiotherapy throughout life Not just in early childhood. Not just when something goes wrong. Physiotherapy that maintains range of motion, builds strength in muscles weakened by spasticity, and monitors for early contracture development is effective at slowing secondary changes. The families who maintain physiotherapy through adolescence and into adulthood consistently do better than those who stop.
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Orthotics — wearing them, not just owning them Ankle-foot orthoses maintain joint position between therapy sessions. A child who wears their AFOs consistently throughout the day preserves more ankle range of motion than one who wears them only for physiotherapy appointments. The same principle applies to other orthotics. They work when they’re on.
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Hip surveillance X-rays Hip subluxation is largely preventable if caught early. Guidelines recommend 6- to 12-monthly hip X-rays for all children with spastic CP until skeletal maturity. Families who don’t know to ask for this — which is most families — often discover hip problems when they’ve already become significant. Ask your child’s paediatrician or CP specialist about hip surveillance at your next appointment if you haven’t already.
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Botulinum toxin injections where appropriate Targeted Botox reduces spasticity in specific muscle groups for 3 to 6 months. Used alongside physiotherapy, it gives a window of reduced muscle tension during which stretching and exercise are more effective. It’s a temporary tool — the spasticity returns — but repeated use can slow contracture development in specific muscles.
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Spasticity surgery — particularly SFDM from age 2 This is the most significant intervention available for changing the long-term trajectory. SFDM surgery reduces spasticity by addressing fibrotic tissue within spastic muscles, directly decreasing the chronic tension that drives secondary complications. Done early, it reduces the decades-long mechanical stress on joints, slows contracture development, makes physiotherapy more effective, and can preserve or restore function that would otherwise be lost. There is no upper age limit — adults benefit too, though the earlier after age 2, the more of the secondary damage trajectory is prevented.

The key principle: Every intervention on this list works better earlier. A contracture prevented is easier than a contracture corrected. Hip subluxation caught at 30% migration is far easier to manage than one caught at 70%. Walking preserved is harder to lose than walking restored. Time spent waiting and watching is time that is difficult to recover.

Wondering whether your child’s current management plan is slowing the secondary complications — or whether surgery could change their trajectory?

Request a free remote evaluation →

Frequently asked questions

Does cerebral palsy get worse over time?

The brain injury is stable and doesn’t worsen. But the body’s response to it does. Without adequate treatment, spastic muscles cause progressive contractures, hip dislocation, scoliosis, and chronic pain. Fatigue builds over decades. Walking ability that was present in childhood often deteriorates in the 30s and 40s. The brain damage doesn’t get worse; the musculoskeletal consequences of it do, without proactive management.

Will my child with CP get better over time?

During childhood, with good therapy and — where indicated — surgical intervention, many children show meaningful functional gains. The brain is most plastic in the first two years of life, and intensive therapy during this window produces real results. These gains require active effort — they don’t happen automatically with age. Without treatment, function tends to plateau or decline. With treatment, the trajectory is considerably more positive.

Why does CP seem to get worse in adulthood?

Several processes converge. Adults with CP use two to three times the energy to walk as unaffected people — this debt compounds over decades, producing increasing fatigue. The mechanical strain of asymmetric movement damages joints over time, causing chronic pain. Muscles on the “stronger” side develop overuse injuries after decades of compensating. Untreated spasticity causes progressive contractures, sometimes leading to joint dislocation and spinal deformity. None of this is inevitable with proactive management.

At what age do adults with CP typically notice things getting worse?

Research consistently shows significant functional decline beginning in the mid-30s to early 40s, though this varies considerably by type, severity, and quality of prior management. Adults who walked independently in youth and received limited specialist care often notice walking becoming harder, more painful, and more tiring between ages 35 and 45. Hip and back pain often emerges or worsens during this period.

What causes the loss of walking ability in CP?

Progressive contractures reduce available range of motion at the hip, knee, and ankle. Hip pain from subluxation makes walking too painful. Scoliosis shifts the body’s centre of gravity. And the cumulative fatigue of an abnormal gait pattern eventually outpaces available reserves. Not all of this is inevitable — early spasticity treatment, hip surveillance, and physiotherapy can significantly delay or prevent walking loss.

Can surgery prevent CP from getting worse?

Surgery that reduces spasticity — particularly SFDM — directly addresses the mechanism by which many secondary complications develop. By reducing the chronic muscle tension driving contractures, joint damage, and spinal deformity, surgery can substantially change the body’s long-term trajectory. The earlier after age 2 it’s done, the more of the secondary damage it prevents. It’s not a guarantee against all future complications, but it significantly alters the trajectory compared to physiotherapy alone.

My child’s CP seems worse than when they were first diagnosed — is this normal?

In early childhood, some children appear to get worse before they get better — not because the brain injury is progressing, but because spasticity becomes more visible as the child attempts more complex movements. This “unmasking” is common and doesn’t mean the condition has worsened. Growth spurts also cause temporary deterioration. If the decline persists or seems structural rather than temporary, seek an assessment — early contractures and hip subluxation need treatment, not observation.

References

Haak P, et al. (2009). “Cerebral palsy and aging.” Developmental Medicine & Child Neurology. PubMed ↗
Morgan P, McGinley J. (2014). “Gait function and decline in adults with cerebral palsy: a systematic review.” Disability and Rehabilitation. PubMed ↗
Novak I, et al. (2020). “State of the Evidence Traffic Lights 2019.” Current Neurology and Neuroscience Reports. PubMed ↗
Opheim A, et al. (2009). “Walking function, pain, and fatigue in adults with cerebral palsy.” Developmental Medicine & Child Neurology. PubMed ↗
Hanna SE, et al. (2009). “Stability and decline in gross motor function among children and youth with cerebral palsy.” Developmental Medicine & Child Neurology. PubMed ↗
Shore BJ, et al. (2012). “Natural history of children with hip displacement in cerebral palsy.” Journal of Pediatric Orthopaedics. PubMed ↗

Medical disclaimer: This article is for informational purposes. Individual assessment and treatment decisions should be made with qualified specialists who have examined your child or assessed you directly.