Developmental Language Disorder (DLD): Signs, Symptoms, and How It Affects Communication
Language is an important part of how children learn, connect with others, and navigate everyday life. When a child has persistent difficulty understanding or using language, it can affect much more than conversation. Developmental Language Disorder (DLD) is one of the most common developmental disorders in children, yet many families have never heard of it. Understanding the signs of DLD can help parents seek support early and give their child the tools they need to succeed.
What Is Developmental Language Disorder (DLD)?
If your child struggles to communicate, follow directions, or learn new words, you may have heard the term Developmental Language Disorder (DLD).
Developmental Language Disorder is a neurodevelopmental disorder that affects how children learn, understand, and use language. Some children have difficulty understanding spoken language (receptive language), others have difficulty expressing themselves (expressive language), and many experience challenges with both. You may also hear the older term Specific Language Impairment (SLI) but today, Developmental Language Disorder (DLD) is the preferred diagnosis.
DLD is not caused by hearing loss, autism, an intellectual disability, or limited exposure to language. It is a lifelong condition that begins in childhood, but with early identification and speech-language therapy, children can make significant progress. DLD affects approximately 1 in 14 children, making it one of the most common developmental disorders in childhood.
If you've been wondering whether your child's language struggles are typical or something more, this guide will walk you through what to look for and the next steps you can take.
Signs and Symptoms: How DLD Affects Communication
Children with Developmental Language Disorder (DLD) experience challenges with understanding and using language in everyday situations. These difficulties can affect how they follow directions, express themselves, and interact with others at home, school, and in the community.
Receptive Language (Understanding Language)
Children with receptive language difficulties may have trouble understanding what others say. This can make it hard to:
Follow directions, especially when there are multiple steps
Understand classroom instructions
Process longer or more complex sentences
Understand questions during conversation
Learn new concepts through spoken instruction
Expressive Language (Using Language)
Children with expressive language difficulties may know what they want to say but struggle to put their thoughts into words. They may have difficulty:
Finding the right words during conversation
Forming complete, grammatically correct sentences
Clearly explaining ideas, thoughts, or experiences
Using age-appropriate vocabulary
Telling stories in a clear, organized way
Social Communication
Because language plays a key role in social interaction, children with DLD may also find it challenging to connect with peers. They may struggle with:
Taking turns in conversation
Staying on topic
Understanding jokes, sarcasm, or figurative language
Sharing ideas during play
Building and maintaining friendships
Over time, these communication differences can affect a child’s confidence and participation in social and academic settings. Speech-language therapy can help children strengthen these skills so they can communicate more clearly and confidently in everyday life.
Does Developmental Language Disorder (DLD) Affect Other Areas of Development?
Yes. Because language is the foundation for learning, Developmental Language Disorder (DLD) can affect much more than just speaking and understanding language. Many children with DLD also experience challenges with reading, writing, academics, and even social-emotional development.
How Does DLD Affect Reading?
Learning to read depends on strong language skills. Before children can become successful readers, they need to understand vocabulary, grammar, sentence structure, and spoken language. When these language skills are difficult, learning to read becomes more challenging.
Children with DLD may have difficulty:
Learning letter-sound relationships (phonics)
Sounding out unfamiliar words (decoding)
Reading smoothly and accurately (reading fluency)
Understanding the meaning of what they read (reading comprehension)
Identifying the main idea and understanding story structure
Learning and remembering new vocabulary
Children with expressive language difficulties may struggle to read aloud smoothly or decode unfamiliar words, while children with receptive language difficulties often have trouble understanding what they have read. Many children experience challenges in both areas.
How Does DLD Affect Writing?
Writing is another language-based skill that often becomes more difficult for children with DLD.
To write successfully, children must organize their thoughts, choose the right words, use correct grammar, and create clear, meaningful sentences. They also need to understand how to plan, edit, and revise their work.
A child with DLD may have difficulty:
Organizing ideas before writing
Writing detailed, on-topic responses
Using age-appropriate vocabulary
Applying grammar correctly
Editing and revising their writing
Explaining their thoughts clearly on paper
Because writing requires both expressive and receptive language skills, children with DLD often need additional support as writing demands increase throughout elementary and middle school.
How Can DLD Affect School and Everyday Life?
Since language is involved in nearly every part of learning, DLD can affect a child's overall academic success. Children may have difficulty following classroom instruction, participating in discussions, completing assignments, or learning new concepts.
These challenges can also affect a child's confidence. Some children may become frustrated when they can't communicate their ideas, while others may avoid participating in class or social situations because communication feels difficult.
Over time, children with DLD may be at greater risk for:
Academic struggles
Lower self-confidence
Difficulty making and maintaining friendships
Anxiety or frustration related to communication
Reduced participation in classroom activities
The good news is that early identification and speech-language therapy can make a significant difference. With the right support, children can build stronger language, literacy, and communication skills that help them succeed both in school and in everyday life.
What Comes Next
Understanding the signs of Developmental Language Disorder is an important first step. In Part 2, we’ll take a closer look at how DLD is diagnosed, what a speech and language evaluation involves, and the types of therapy and support that can help children build stronger communication skills.
Questions about your child’s speech, language, or reading development? Reach out to schedule a free phone consultation or speech-language evaluation. We’re here to support your family every step of the way!