Understand what developmental language disorder is, how to spot the common signs, and where to get the right support.
Written by: William Huynh, MPSA-CPSP, Director of Brighter Futures Allied Health
Published: 07 September 2026
Disclaimer: The information on this page is for general education only and should not be used as a substitute for professional assessment or personalised clinical advice. If you have concerns about speech, language, voice or swallowing, speak with a qualified speech pathologist or appropriate healthcare professional.
Developmental Language Disorder (DLD) is a lifelong condition that affects how a person learns, understands, and uses language. It can affect expressive language, such as finding the right words or putting sentences together, as well as receptive language, such as understanding what others say. DLD can vary from person to person and may become more noticeable as language demands increase at home, school, work, or in social situations.
The exact cause of DLD is not fully understood. It is not caused by a lack of exposure to language, poor parenting, or a child simply being a late talker. DLD is thought to involve differences in how the brain develops and processes language, and it can occur alongside other developmental differences.
Clinician’s Notes: DLD is a permanent, lifelong disability that affects approximately 1 in 14 people, according to The DLD Project. Despite how common it is, the condition remains poorly understood, with fewer than 20% of Australians reporting that they have heard of the condition. This lack of awareness can contribute to stigma and may leave people with DLD and their families feeling isolated or unsure about where to find support.
DLD can affect people differently, and signs may change as language demands become more complex. Some difficulties may be noticeable in early childhood, while others become more apparent at school, work, or in social situations.
You can seek professional advice whenever you have concerns about language development or communication, whether you are wondering about your child or recognising difficulties in yourself. A speech pathologist can help identify areas of difficulty and determine whether an assessment or ongoing support may be appropriate.
For young children, it may be helpful to seek advice if your child:
Consider speaking with a speech pathologist if your child:
Language difficulties can become more noticeable as communication demands increase at school, work, or in social situations. You can seek support at any age if you or your child consistently experience difficulties with:
Support for DLD is tailored to the person’s individual communication needs and how these difficulties affect everyday life. A speech pathologist can work with children, teenagers, and adults to build language skills and develop practical strategies for communicating more confidently at home, school, work, and in social situations.
An assessment can help identify areas of strength and difficulty across understanding and using language. This may include looking at how a person understands instructions, finds and uses words, puts sentences together, tells stories, or communicates in everyday situations. The results can help guide an individualised therapy approach and identify practical supports that may be useful.
A speech therapist may focus on both expressive language, which is how a person communicates their thoughts, ideas, and needs, and receptive language, which is how they understand what others say or what they read. Support might include building vocabulary, developing sentence structure, improving comprehension, or finding strategies to make communication easier in everyday situations.
For some people with DLD, language difficulties can also affect conversations and social interactions. Speech pathology support may help with skills such as taking turns in conversation, understanding what someone means when they do not say it directly, explaining ideas clearly, and adjusting communication to different people and situations.
If you are concerned about language development in yourself or your child, reliable information can be a helpful starting point. The following Australian resources can help you learn more about Developmental Language Disorder and communication difficulties:
While online information can help you understand the condition, it cannot replace an individual assessment. A qualified speech pathologist can look at how language difficulties affect communication in everyday life and help you understand what support may be appropriate. If you are unsure where to begin, speaking with a speech pathologist can be a useful first step.
William Huynh is a senior speech pathologist and the director of NDIS-registered provider Brighter Futures Allied Health. He has over a decade of experience working with children and adults with complex communication needs, including disability, dysphagia, and acquired language impairments. William has completed specialist training in approaches such as Key Word Sign, LAMP Words for Life, Grid 3, and Hanen’s More Than Words. He also supervises speech pathologists and student placements, supporting evidence-based and family-centred practice.
