Cerebral Palsy: New findings inform better preventive care

Introduction

Cerebral palsy (CP) is a group of permanent, non-progressive neurological disorders that affect movement, muscle tone, and posture. CP results from injury or abnormal development of the immature brain, most often occurring before birth, during delivery, or in the early neonatal period. It is one of the most common childhood motor disabilities, with an estimated prevalence of 2–3 cases per 1,000 live births worldwide [1].

The clinical presentation of cerebral palsy is highly variable and depends on the extent, location, and timing of brain injury. Common symptoms include impaired motor coordination, muscle stiffness or hypotonia, exaggerated reflexes, involuntary movements, and difficulties with balance and posture. Many individuals with CP also experience associated challenges involving speech, swallowing, vision, cognition, and sensation, reflecting the broad neurological impact of the disorder [2].

The etiology of cerebral palsy is multifactorial. While historically attributed primarily to birth injury, current evidence indicates that CP most often arises from a combination of prenatal and perinatal factors. These include genetic susceptibility, maternal infections or inflammation during pregnancy, premature birth, low birth weight, placental abnormalities, neonatal hypoxic–ischemic injury, severe jaundice, and other neonatal complications [3]. In many cases, no single cause can be identified, underscoring the complexity of CP pathogenesis.

Types of Cerebral Palsy and Associated Morbidity

Cerebral palsy is commonly classified into four major subtypes, based on the predominant movement disorder and the brain regions affected. Disease severity and long-term morbidity vary considerably across these categories.

• Spastic Cerebral Palsy, the most common form, is characterized by increased muscle tone and stiffness, often affecting the lower limbs more than the upper limbs. It results from damage to the motor cortex, which controls voluntary movement.
• Dyskinetic Cerebral Palsy involves involuntary, uncontrolled movements such as twisting, writhing, or repetitive motions. This subtype arises from injury to the basal ganglia, structures involved in motor regulation.
• Ataxic Cerebral Palsy is caused by damage to the cerebellum, leading to impaired balance, coordination, and fine motor control.
• Mixed Cerebral Palsy refers to cases in which features of more than one subtype are present, indicating injury to multiple brain regions [4,5].

The functional impact of CP ranges from mild motor impairment to severe physical disability, often accompanied by coexisting medical conditions that contribute to long-term morbidity.

Current Standards of Care

Management of cerebral palsy requires a multidisciplinary, lifelong approach tailored to the individual’s functional needs. Core components of care include:

• Physical therapy, to improve strength, flexibility, posture, and mobility
• Occupational therapy, to support independence in daily living activities
• Speech and language therapy, to address communication and swallowing difficulties

In selected cases, pharmacologic treatments, orthotic devices, assistive technologies, and surgical interventions may be employed to manage spasticity, prevent contractures, or improve function. Mobility aids such as walkers or wheelchairs, as well as communication devices, play an essential role in maximizing independence and participation [6].

Life Expectancy and Long-Term Outcomes

Cerebral palsy is a lifelong condition; however, life expectancy varies widely depending on disease severity and the presence of associated comorbidities. Individuals with mild forms of CP and access to appropriate medical and supportive care often have a near-normal life expectancy [7].

In contrast, individuals with severe motor impairment, intellectual disability, epilepsy, or chronic respiratory complications face substantially higher health risks. Population-based studies indicate that adults with cerebral palsy may experience up to a 40% reduction in life expectancy, with an average lifespan approximately 24 years shorter than that of the general population [8]. Neurological impairment and secondary medical complications are major contributors to this increased mortality risk.

Understanding the mechanisms underlying these outcomes has become a major focus of current research. In the sections that follow, we examine two emerging areas of investigation that are reshaping our understanding of cerebral palsy and informing new strategies for early intervention and preventive care.

References
[1] CDC- Data and Statistics for Cerebral Palsy
[2] NINDS: Cerebral Palsy-Symptoms
[3] CDC- Risk factors for Cerebral Palsy
[4] NINDS: Cerebral Palsy Types and corresponding brain damages
[5] Cerebral Palsy Guide: Co-existing Conditions
[6] American Academy of Pediatrics/Patient Care/Cerebral Palsy
[7] Cerebral Palsy Guide: Life Expectancy
[8] Survival and mortality in cerebral palsy: observations to the sixth decade from a data linkage study of a total population register and National Death Index. Blair E, Langdon K, McIntyre S, Lawrence D and Watson L. BMC Neurology (2019) 19: 111. https://doi.org/10.1186/s12883-019-1343-1


Causes of death among adults with and without cerebral palsy

Large population-based studies have begun to clarify how mortality patterns in adults with cerebral palsy differ from those in the general population. A recent U.S. analysis examined 13,332,871 deaths recorded between 2013 and 2017, including 13,897 individuals with cerebral palsy and 13,318,974 individuals without CP [1]. Causes of death were categorized into 11 major groups: heart disease, pneumonitis, influenza and pneumonia, respiratory failure, malignant neoplasms, choking, septicemia, genitourinary diseases, chronic lower respiratory diseases, cerebrovascular diseases, and unknown or unspecified causes.

Elevated Risk of Respiratory-Related Mortality

The most striking finding was the markedly increased risk of death from respiratory causes among adults with cerebral palsy. Compared with individuals without CP, adults with CP showed substantially higher adjusted odds ratios (aORs) for:

• Pneumonitis (aOR 31.14)
• Choking (aOR 20.66)
• Respiratory failure (aOR 17.24)
• Influenza and pneumonia (aOR 8.78)

These findings are consistent with known vulnerabilities in CP, including oropharyngeal dysphagia, impaired cough reflexes, reduced mobility, and chronic aspiration, all of which increase susceptibility to respiratory infections and complications.

In addition to respiratory causes, adults with CP also demonstrated increased odds of death from:

• Unknown or unspecified causes (aOR 19.0)
• Septicemia (aOR 1.92)
• Genitourinary diseases (aOR 1.67)

Together, these data highlight a disproportionate burden of largely preventable or manageable conditions in the CP population.

Causes of Death With Reduced Relative Risk

In contrast, adults with cerebral palsy were less likely than the general population to die from several common chronic conditions, including:

• Malignant neoplasms (aOR 0.12)
• Chronic lower respiratory diseases (aOR 0.50)
• Heart disease (aOR 0.61)
• Cerebrovascular diseases (aOR 0.66)

Despite this reduced relative risk, heart disease remained the leading cause of death among adults with CP, followed closely by pneumonitis and influenza/pneumonia. This distinction between relative and absolute risk underscores the need for cardiovascular monitoring even in populations where relative risk appears lower.

Demographic Disparities in Mortality

The study also identified important demographic differences in cause-specific mortality among individuals with cerebral palsy. Females with CP were more likely than males to die from respiratory failure, while Non-Hispanic Black adults with CP had a higher likelihood of death from heart disease and cerebrovascular conditions compared with Non-Hispanic White adults. These findings mirror broader health inequities and point to the influence of social determinants of health, access to care, and chronic disease management.

Implications for Prevention and Public Health

Taken together, the implications of these findings are twofold. First, although heart disease remains a leading cause of death across populations, adults with cerebral palsy face a disproportionately high risk of mortality from preventable respiratory conditions. Targeted interventions—including early dysphagia screening, vaccination programs, respiratory therapy, and proactive infection management—should be central components of adult CP care.

Second, the observed racial disparities in cardiovascular mortality highlight the need for multifaceted, equity-focused approaches to improve circulatory health and chronic disease prevention among people with cerebral palsy. Coordinated care models that integrate neurological, respiratory, and cardiovascular health may offer the greatest opportunity to reduce premature mortality in this vulnerable population.

Supporting Evidence From Broader Studies

​The findings reported by Stevens, Turk, and Landes [1] are supported by a recent systematic review and meta-analysis of mortality risk factors in cerebral palsy [2] and extend earlier population-based observations from Western Australia, which documented elevated mortality persisting into the sixth decade of life [3]. Together, these studies reinforce the urgency of shifting CP management beyond childhood and toward lifelong preventive care strategies.

References
[1] Cause of death trends among adults with and without cerebral palsy in the United States, 2013−2017. Stevens J D, Turk M A and Landes S D. Annals of Physical and Rehabilitation Medicine 65 (2022) 101553. ). https://doi.org/10.1016/j.rehab.2021.101553

The study by Stevens, Turk and Landes was corroborated by a more recent meta-analysis of multiple smaller studies [2]. It also extends a 2019 study of a CP population from Western Australia [3].
 
[2] Risk Factors for Mortality in Patients With Cerebral Palsy: A Systematic Review and Meta-Analysis. Aldharman SS et al. Alhamad F S, Alharbi R M, et al. . Cureus 15(5): e39327. DOI 10.7759/cureus.39327
[3] Survival and mortality in cerebral palsy: observations to the sixth decade from a data linkage study of a total population register and National Death Index. Blair E, Langdon K, McIntyre S, Lawrence D and Watson L. BMC Neurology (2019) 19: 111. https://doi.org/10.1186/s12883-019-1343-1
 

Early onset of chronic diseases in young individuals with cerebral palsy

Emerging evidence indicates that cerebral palsy is associated not only with childhood disability and adult morbidity, but also with a premature onset of chronic diseases traditionally considered “adult-onset.” A landmark 2022 population-based study by Daniel G. Whitney examined this phenomenon in children and adolescents with CP [1].

The study analyzed 5,559 children with cerebral palsy aged 1–13 years, drawn from a comparison population of 2,324,035 children eligible for analysis. Thirteen categories of adult-onset chronic diseases were evaluated, including cardiovascular, metabolic, renal, endocrine, respiratory, oncologic, musculoskeletal, and mental health conditions.

Substantially Elevated Risk Across Multiple Chronic Diseases

Children with cerebral palsy demonstrated a significantly higher 5-year risk for every chronic disease category studied compared with peers without CP. Relative risks (RRs) ranged from 1.19 to 64.26, with all associations reaching statistical significance (P < 0.05). Importantly, this increased risk was observed consistently across all age strata, including children as young as 1–2 years, underscoring the early emergence of systemic disease vulnerability.

Highest-Risk Conditions (“Top Tier”)
The most pronounced risk elevations were observed for:

• Cerebrovascular disease (RR 64.26)
• Heart failure (RR 15.17)
• Chronic kidney disease (stage I–IV or end-stage renal disease) (RR 14.97)
• Metastatic cancer (RR 9.81)

These striking findings suggest that children with CP may experience accelerated pathophysiological processes affecting vascular, cardiac, and renal systems, potentially driven by chronic inflammation, immobility, metabolic dysregulation, and neurologic impairment.

Moderate-Risk Conditions (“Second Tier”)
A second tier of conditions also showed markedly increased risk:

• Liver disease (RR 7.97)
• Any malignancy (excluding skin cancer) (RR 6.51)
• Other chronic kidney diseases (RR 6.49)
• Cardiac conduction disorders and dysrhythmias (RR 6.47)

Lower but Significant Risk Elevations (“Third Tier”)
Even conditions with lower relative risks remained significantly more common in children with CP:

• Hypothyroidism (RR 5.02)
• Osteoarthritis (RR 5.00)
• Type 2 diabetes (RR 2.64)
• Chronic obstructive pulmonary disease (RR 1.68)
• Depression (RR 1.19)

Together, these findings indicate that multisystem chronic disease risk emerges during childhood, long before traditional screening practices would typically begin.
Influence of Patient-Level Risk Factors

The study also identified patient-level modifiers that influenced chronic disease risk among children with cerebral palsy. Sex-based differences were modest but notable: males exhibited a 20% higher risk of chronic obstructive pulmonary disease, while showing lower risks of chronic kidney disease (31%) and liver disease (35%) compared with females.

The co-occurrence of intellectual disability and/or epilepsy significantly increased the risk of nearly all chronic diseases evaluated, with the exception of depression. In addition, wheelchair use, a proxy for greater motor impairment and reduced mobility, was associated with elevated risk across multiple disease categories.

These findings emphasize that disease risk within CP is heterogeneous and closely linked to functional status and comorbid neurological conditions.

Clinical and Preventive Care Implications

This study provides some of the strongest epidemiologic evidence to date that children and adolescents with cerebral palsy are at heightened risk for a wide range of chronic diseases typically associated with adulthood. The demonstration of increased risk within a five-year window during critical developmental periods has important implications for clinical care.
Early identification of at-risk children—based on functional status, comorbidities, and mobility limitations—may enable earlier screening, targeted monitoring, and preventive interventions. These findings argue for a paradigm shift in CP care, moving beyond symptom management toward lifelong, proactive prevention strategies that address cardiovascular, metabolic, renal, and endocrine health beginning in childhood.

Reference
[1] 5-year risk of “adult-onset” chronic diseases during childhood and adolescent transitioning for individuals with cerebral palsy. Whitney D J. Preventive Medicine Reports 29 (2022) 101933. https://doi.org/10.1016/j.pmedr.2022.101933

Online resources
 
General Information and Education

• Cerebral Palsy Guide
• Cerebral Palsy Foundation (CPF)
• United Cerebral Palsy (UCP)
• Centers for Disease Control and Prevention (CDC) - Cerebral Palsy

 
Medical and Therapeutic Resources

• American Academy for Cerebral Palsy and Developmental Medicine (AACPDM
• National Institute of Neurological Disorders and Stroke (NINDS) - Cerebral Palsy Information Page

 
Support and Advocacy

• Cerebral Palsy Alliance Research Foundation (CPARF)
• Family Voices
• Birth Injury Center

 
Community and Networking

• MyChild at CerebralPalsy.org
• March of Dimes - Cerebral Palsy

 
Financial and Legal Assistance

• Social Security Administration (SSA) - Disability Benefits for Cerebral Palsy
• Patient Advocate Foundation
• Cerebral Palsy Toolkit (provided by Levin & Perconti, a private law firm)

 
These resources offer a wealth of information and support for individuals with cerebral palsy and their caregivers, helping them navigate the challenges associated with the condition and improve their quality of life.