Speech and Language Delays in Children: When to Worry, What to Do, and How Speech Therapy Helps

Your toddler isn't talking as much as other kids their age. Maybe they're only using a handful of words at 2 years old, or they seem to understand everything you say but can't express it back. You've probably heard "every child develops at their own pace", and while that's true, there's a point where waiting and hoping stops being the right call.

Speech and language delays are the most common type of developmental delay in young children. According to the American Academy of Pediatrics, roughly 1 in 5 children will experience some form of speech or language delay. The good news is that with early identification and the right support, most children make significant progress.

This guide explains what speech and language delays look like at different ages, what causes them, when you should be concerned, and how speech therapy can help your child catch up.

What Is a Speech or Language Delay?

Before diving in, it's worth clarifying a distinction that even many pediatricians use loosely. Speech and language are related but different things.

Speech refers to the physical production of sounds and words: the mechanics of moving the mouth, tongue, lips, and jaw to make sounds that other people can understand.

Language refers to the system of communication itself: understanding words, putting sentences together, following directions, and using words to express thoughts, feelings, and needs.

A child can have a speech delay (they know what they want to say but have trouble saying it clearly), a language delay (they have difficulty understanding or using words and sentences), or both. The type of delay matters because it shapes the kind of therapy that will be most effective.

What About "Late Talkers"?

"Late talker" is a term used to describe toddlers, usually between 18 and 30 months, who have good comprehension, normal play and social skills, and age-appropriate motor development but a limited spoken vocabulary for their age.

Some late talkers do catch up on their own without intervention. But research shows that many don't, and there's no reliable way to predict which children will close the gap and which will continue to fall behind. This is why speech-language pathologists generally recommend evaluation sooner rather than later. An evaluation doesn't commit you to therapy. It gives you information so you can make an informed decision instead of guessing.

Speech and Language Milestones: What to Expect by Age

Every child develops on their own timeline, but there are well-established milestones that give parents and clinicians a framework for identifying potential delays.

By 6 Months

Your baby should be making cooing and babbling sounds, responding to their name, and turning toward sounds and voices. They should be making eye contact and smiling in response to interaction.

By 12 Months

Most children say their first word around their first birthday, often "mama," "dada," or "bye-bye." They should be babbling with varied sounds, using gestures like pointing and waving, and showing that they understand simple words like "no" and "bottle."

By 18 Months

By 18 months, most toddlers have a vocabulary of at least 10 to 20 words. They should be using words more than gestures to communicate, imitating sounds and words they hear, and understanding simple instructions like "give me the ball."

By 24 Months

At 2 years old, most children have at least 50 words and are starting to combine two words into simple phrases, "more milk," "daddy go," "big truck." Strangers should be able to understand roughly half of what your child says.

By 36 Months

By age 3, children typically use three-word phrases and simple sentences. They can follow two-step instructions, answer basic questions, and be understood by unfamiliar listeners about 75% of the time. Their vocabulary is expanding rapidly, often several new words per day.

By 4 Years

By their fourth birthday, most children speak in full sentences, tell simple stories, and are understood by strangers the vast majority of the time. They can carry on a conversation, ask questions, and understand most of what's said to them.

When Should You Be Concerned?

Missing a single milestone by a few weeks is usually not cause for alarm. But if your child is consistently behind across multiple milestones, or if they show any of the following patterns, it's time to talk to your pediatrician or contact a speech-language pathologist directly.

Red flags at any age include:

No babbling by 12 months. Babbling is one of the earliest precursors to speech. A child who isn't babbling by their first birthday may need evaluation.

No single words by 16 to 18 months. By this age, most children have at least a few words they use consistently.

No two-word phrases by 24 months. If your child isn't combining words by age 2, this is one of the most common triggers for referral to an SLP.

Loss of previously acquired words or skills. Any regression in speech or language where a child stops using words they used to say should be evaluated promptly.

Relying on gestures instead of words past 18 months. Some gesturing is normal, but if a toddler is exclusively using pointing, pulling, or grunting to communicate beyond 18 months, verbal language may not be developing as expected.

Frustration or behavioral issues related to communication. Children who can't express their needs verbally often become frustrated. This can show up as tantrums, screaming, hitting, or withdrawal. If you notice a pattern of behavioral issues tied to communication breakdowns, a speech evaluation can help.

Difficulty understanding simple directions. If your 2-year-old doesn't seem to comprehend basic requests like "get your shoes" or "come here," this may indicate a receptive language delay.

"My Pediatrician Said to Wait"

If your pediatrician advises waiting and you're still concerned, it is completely appropriate to seek an evaluation on your own. Parents know their children, and your instinct matters. A speech-language evaluation is low-risk and high-reward. If everything is fine, you get peace of mind. If there's a delay, you get an early start on intervention, which is when therapy is most effective.

What Causes Speech and Language Delays?

There are many possible contributing factors, and in some cases, the cause is never clearly identified. Common factors include:

Hearing loss or chronic ear infections. Even mild hearing loss can significantly affect speech and language development. Chronic ear infections can cause fluctuating hearing, which makes it harder for children to consistently hear and learn the sounds of language. A hearing evaluation should be part of any speech delay workup.

Oral-motor issues. Some children have difficulty coordinating the muscles of the mouth needed for speech. This includes conditions like childhood apraxia of speech (CAS), where the brain has difficulty sending the correct signals to the speech muscles, and tongue-tie, where restricted tongue movement can affect sound production.

Developmental conditions. Speech and language delays are common in children with autism spectrum disorder, Down syndrome, and other developmental conditions. In some cases, a speech delay may be the earliest noticeable sign of a broader developmental difference.

Premature birth. Children born prematurely are at higher risk for speech and language delays, particularly if there were complications during birth or early development.

Environmental factors. A child's language environment matters. Children who have less exposure to conversation, reading, and interactive play may develop language more slowly. However, it's important to note that speech delays are not caused by bilingualism. Children growing up in multilingual homes develop language on a similar timeline to monolingual children.

Family history. Speech and language delays often run in families. If a parent or sibling experienced a speech delay, there may be a higher likelihood.

How Speech Therapy Helps Children with Speech and Language Delays

Speech therapy for young children looks very different from what most people picture. There's no clipboard and flash cards. For toddlers and preschoolers, therapy is play-based, interactive, and designed to meet the child where they are developmentally.

What Happens During an Evaluation

A speech-language pathologist will assess your child's communication across several areas: how they understand language, how they express themselves (through words, sounds, gestures, or a combination), how they play and interact, and how their oral-motor skills are functioning.

The SLP will talk with you extensively about your child's development history, communication at home, and your concerns. Parent input is one of the most important pieces of the evaluation.

Based on the results, the SLP will determine whether a delay is present, how significant it is, and what type of therapy is recommended.

What Treatment Looks Like

For toddlers and young children, speech therapy is heavily focused on parent coaching. The SLP teaches you strategies to use throughout your daily routines (during meals, playtime, bath time, and reading) that naturally encourage your child's speech and language development.

This approach works because a child spends far more time with their parents than with any therapist. The strategies you learn in a one-hour session can be applied across dozens of interactions every day. Research consistently shows that parent-implemented intervention is one of the most effective models for early speech and language therapy.

In sessions, the SLP might work on:

Building vocabulary by creating opportunities for the child to hear and use new words in motivating contexts, often through play with toys, books, or activities the child is naturally interested in.

Encouraging two-word combinations by modeling simple phrases during play and daily routines and creating situations where the child is motivated to combine words.

Improving speech clarity by targeting specific sounds or sound patterns the child is struggling with, using techniques appropriate to the child's age and the nature of the difficulty.

Strengthening comprehension by working on following directions, understanding questions, and building the child's ability to process and respond to language.

Supporting social communication by practicing turn-taking, joint attention, and the back-and-forth of conversation at a level appropriate for the child's age.

Telehealth Speech Therapy for Speech and Language Delays

Telehealth is a natural fit for early speech and language therapy, and research supports its effectiveness for young children.

The parent coaching model that drives early intervention translates seamlessly to telehealth. During a video session, the SLP can observe your child in their natural environment, coach you in real time on strategies to use, and watch as you practice with your child. This live coaching model is often more effective than traditional therapy where a parent sits in a waiting room.

Telehealth also eliminates the barriers that make consistent therapy difficult for many families. There's no driving across town, no disrupting nap schedules, and no sitting in waiting rooms with other sick kids. You log on from home, and your child participates in a familiar, comfortable space.

For families in rural areas or communities with limited access to pediatric SLPs, telehealth can mean the difference between getting help now and sitting on a waitlist for months.

How Stoa Therapy Treats Speech and Language Delays

Stoa Therapy provides telehealth speech-language pathology services for children with speech and language delays in Virginia, Colorado, Illinois, and Louisiana.

Early evaluation. If you're concerned about your child's speech or language development, we start with a thorough evaluation to understand where your child is, identify any delays, and build a plan.

Parent-centered treatment. Our SLPs work closely with parents to build strategies into daily life. You'll leave every session with specific, practical techniques you can use right away.

Flexible scheduling. Because sessions happen from home via telehealth, it's easier to schedule the consistent, frequent sessions that young children benefit from most — without rearranging your family's entire routine.

Insurance accepted. We accept most major commercial insurance plans and Medicaid. Most families pay only their copay, and we handle all billing and insurance verification directly.

You don't need a referral to get started. Contact Stoa Therapy to schedule an evaluation, or ask your pediatrician for a referral.

Phone: (517) 997-1790 Fax: (517) 997-8198 Online: stoa-therapy.com/referral