Top 10 Causes of Dysarthria in Children Every Parent Should Know

By Rajini D

Last Updated: March 12, 2025

Dysarthria affects how children speak, influencing their communication, social interactions, and emotional well-being. Recognizing the signs of dysarthria is vital for parents, as early detection and intervention can significantly improve management. Understanding this condition empowers you to seek appropriate support and therapy, enhancing your child’s ability to express themselves more clearly. This guide explores the various causes of dysarthria, equipping you with the knowledge to support your child effectively.

Understanding Dysarthria in Children

What is Dysarthria?

Dysarthria is a motor speech disorder where children find it hard to use or control the muscles of their mouth, face, and respiratory system necessary for speech. This condition doesn’t change how children understand language or what they want to say, but it affects how clearly they can speak. The muscles may be weak, move slowly, or not move at all, which can lead to slurred or slow speech that is difficult to understand.

Also Read: Understanding Dysarthria: Symptoms, Causes and Care

Key Symptoms to Recognize

If you’re wondering what to watch out for, here’s a quick list of early signs that might indicate your child has dysarthria:

  • Slurred Speech: Words run together or are hard to articulate.
  • Limited Facial Expressions: Difficulty in moving facial muscles to express emotions.
  • Abnormal Tone: Speech may sound either too nasal or too breathy, as if the child is out of breath.
  • Variable Volume: Speech volume may unexpectedly increase or decrease.
  • Chewing and Swallowing Difficulties: Issues with controlling muscles needed for safe eating and drinking.

10 Common Causes of Dysarthria in Children

1. Neurological Disorders

Dysarthria in children is frequently linked to neurological disorders that impair the brain’s ability to coordinate the muscles used in speech. Cerebral palsy is one of the most common conditions associated with dysarthria. This disorder affects motor coordination and can lead to involuntary movements or rigid muscles, making speech production difficult. Another significant cause is brain injury, which can occur due to accidents, falls, or even birth injuries. For example, a child who suffers a concussion might experience temporary dysarthria as the brain recovers, while more severe injuries might cause permanent speech issues.

2. Genetic Conditions

Genetic conditions that affect muscle strength and neurological development can also lead to dysarthria. Muscular dystrophy, which includes a range of genetic diseases causing muscle weakness and loss, often impacts the muscles around the mouth and throat, critical for clear speech. Similarly, Down syndrome, characterized by an extra chromosome 21, often involves hypotonia (poor muscle tone), which can affect speech clarity.

3. Infections Affecting the Brain

Neurological infections such as meningitis or encephalitis can lead to dysarthria by causing inflammation and damage to areas of the brain involved in speech production. For instance, bacterial meningitis can swell brain tissues and disrupt nerve signals necessary for controlling speech muscles, resulting in slurred or slow speech.

4. Brain Tumors

Children with brain tumors may develop dysarthria as the tumor grows and exerts pressure on parts of the brain responsible for speech. Whether benign or malignant, these tumors can compress the brain’s speech centers or the nerve pathways that control muscle movements, directly impacting speech abilities.

5. Stroke

Strokes are less typical in children but can occur due to congenital heart defects, blood disorders, or infections. A pediatric stroke might damage the part of the brain responsible for speech, leading to sudden symptoms of dysarthria. For example, if the left side of the brain is affected, which typically controls language in right-handed individuals, the child might suddenly start slurring their speech.

6. Head Injuries

Severe head injuries can cause dysarthria by damaging the brain regions that coordinate speech. The impact can range from mild, where a child might have temporary difficulty controlling their speech muscles, to severe, where permanent damage results in ongoing speech difficulties.

7. Toxic Exposure

Exposure to environmental toxins, such as lead or certain chemicals, can affect neurological development and function, leading to dysarthria. A child exposed to high levels of lead might experience a range of symptoms, including slowed cognitive development and impaired speech, due to the toxin’s effect on brain cells.

8. Metabolic Disorders

Metabolic disorders, which affect the body’s chemistry and energy production, can also influence neurological function and speech. For instance, children with untreated hypothyroidism may exhibit features of dysarthria because their metabolic imbalance affects the overall health of brain cells and muscle function.

9. Medication Side Effects

Some medications can cause or worsen dysarthria as a side effect, particularly those used to treat neurological or psychiatric conditions. For example, certain anticonvulsants used to manage seizures may lead to muscle weakness or coordination issues, affecting speech.

10. Developmental Abnormalities

Children born with developmental abnormalities in brain structure might experience dysarthria. Conditions such as cerebral dysgenesis, where the brain does not develop normally, can leave children with lifelong challenges in motor function and speech.

Also read: Top 10 Speech Improving Exercises for Kids with Dysarthria

Examples of Causes Leading to Dysarthria in Children

CauseExample
Neurological DisordersCerebral Palsy, Brain Injury – Children with spastic cerebral palsy may have tight muscle tone affecting speech. Traumatic brain injuries can damage speech coordination areas.
Genetic ConditionsMuscular Dystrophy, Down Syndrome – Progressive muscle weakness in Duchenne Muscular Dystrophy affects speech muscles. Hypotonia in Down Syndrome affects speech clarity.
Infections Affecting the BrainMeningitis – Bacterial meningitis can cause temporary dysarthria as brain inflammation disrupts neural pathways.
Brain TumorsBenign tumor in the frontal lobe – Can impair motor areas of the brain responsible for speech.
StrokeCongenital heart defect leading to stroke – Can affect the brain’s language center, causing dysarthria.
Head InjuriesHead trauma from an accident – Damage to frontal or temporal lobes can result in speech articulation issues.
Toxic ExposureLead paint in old homes – Chronic exposure to lead can cause neurological issues and dysarthria.
Metabolic DisordersHypothyroidism – Lack of thyroid hormone can affect brain cell metabolism and speech muscle function.
Medication Side EffectsAnticonvulsant drugs like phenobarbital – Can lead to dysarthria as a side effect by causing muscle weakness or affecting nerve conduction.
Developmental AbnormalitiesCerebral dysgenesis – Abnormal brain development can lead to severe dysarthria due to improper formation of speech control areas.

Conclusion

Early detection and intervention are crucial in managing dysarthria in children. If you notice signs like slurred speech or inconsistent speech volumes, seek professional advice promptly. At Wellness Hub, we offer tailored speech therapy and resources to support your child’s communication journey. Don’t wait—early action can significantly enhance your child’s ability to express themselves and boost their confidence. Explore our speech therapy resources today and take the first step towards empowering your child to overcome speech challenges and thrive in their social interactions.

Online Speech Therapy for Children with Dysarthria

If your child is showing signs of dysarthria, early intervention through consistent speech support can make a significant difference. At Wellness Hub, we specialize in providing online speech therapy for children with motor speech disorders like dysarthria. Our experienced therapists create personalized, home-based therapy plans that help improve articulation, strengthen speech muscles, and boost your child’s communication confidence. With flexible scheduling and engaging virtual sessions, families can access expert care from the comfort of home. Explore our online speech therapy services and take the first step toward clearer speech and better social interactions.

Frequently Asked Questions:

1. What is dysarthria in children?

Dysarthria occurs when children have difficulty controlling the muscles needed for speech due to neurological disorders or muscle weaknesses. This can make their speech sound slurred, slow, and difficult to understand, impacting their ability to communicate effectively.

2. What causes dysarthria in young children?

Dysarthria in children can be caused by a variety of factors, including neurological disorders like cerebral palsy, brain injuries from accidents, genetic conditions such as muscular dystrophy, infections that affect the brain like meningitis, or any condition that impairs the brain’s ability to control speech muscles.

3. How can I tell if my child has dysarthria?

Signs of dysarthria include slurred or slow speech, difficulty in controlling facial expressions, changes in voice tone, such as sounding monotone or breathy, and variations in speech volume. If your child shows these symptoms, it might be time to consult a healthcare professional.

4. Why is early detection of dysarthria important?

Early detection of dysarthria allows for timely intervention, which can significantly improve a child’s speech clarity and communication abilities. Early therapy can help children develop better speech patterns and reduce the impact of the disorder on their social and academic life.

5. What treatments are available for dysarthria in children?

The primary treatment for dysarthria is speech therapy, which includes exercises to strengthen the muscles involved in speech, improve the child’s ability to articulate words, and use alternative communication strategies if necessary. In some cases, medical treatment might also be required to address the underlying cause.

6. Can dysarthria be cured?

Whether dysarthria can be cured depends on its cause. Some causes, like brain injuries or genetic conditions, might mean the dysarthria can only be managed, not cured. However, many children can significantly improve their speech abilities and quality of life with appropriate therapy.

7. How does speech therapy help children with dysarthria?

Speech therapy helps by teaching children various techniques to improve their muscle control and coordination for better speech. Therapists may use tools and exercises that focus on strengthening tongue and lip movements, enhancing breath control for speech, and teaching children how to modulate their voice.

8. What should I do if I think my child has dysarthria?

If you suspect your child has dysarthria, it’s important to consult with a pediatrician or a speech-language pathologist. These professionals can perform detailed assessments, diagnose the condition, and recommend appropriate treatments or interventions.

9. Can children with dysarthria go to regular school?

Many children with dysarthria can attend regular schools. Depending on the severity of their condition, they might need some accommodations, such as speech therapy during school hours, assistive communication devices, or a customized learning plan to support their educational and communication needs.

10. Where can I find resources to help my child with dysarthria?

You can find a variety of resources and support for children with dysarthria at Wellness Hub. We offer tailored speech therapy sessions, educational materials, and support groups that can assist you and your child.

About the Author:

Rajini Darugupally

M.Sc., Speech-Language Pathologist (9+ years of experience)

Rajini is a passionate and dedicated Speech-Language Pathologist with over 9+ years of experience, specializing in both developmental speech and language disorders in children and rehabilitation in adults. Driven by a desire to empower each individual to find their voice, Rajini brings a wealth of experience and a warm, genuine approach to therapy. Currently, at Wellness Hub, she thrives in a team environment that values innovation, compassion, and achieving results for their clients.

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