Stuttering in Children: Normal Disfluency or Stuttering?

✓ Reviewed against ASHA Practice Portal: Fluency Disorders, NIDCD, NHSEvidence level ALast reviewed October 14, 2026Published October 14, 2026

Many young children go through bumpy speech while language grows fast. Stuttering usually starts between ages 2 and 6, and most children recover — estimates are around 88–91%. Repeating parts of words, stretching sounds, or getting stuck, especially with tension or avoidance, is a reason to see an SLP early.

Bumpy speech is common

All speakers are disfluent sometimes. ASHA describes hesitations, filler words such as “like” or “uh,” and repeating a word or phrase as typical disfluencies. Children learning lots of new words and sounds often have more of them, and ASHA notes that many children go through normal periods of disfluency lasting less than six months.^1,2

ASHA’s early-identification guidance says young children may stutter for a little while, that this is often normal and goes away, and lists signs that stuttering might not stop — such as a lot of trouble saying sounds or words, or repeating the first sounds of words (“b-b-b-ball”).⁵

Typical disfluency vs. stuttering

How typical disfluency and stuttering differ (ASHA).
More typical	More like stuttering
“Um,” “uh,” “like”	Repeating parts of words: “b-b-ball”
Repeating a whole word or phrase: “I want — I want that”	Stretching a sound: “sssssun”
Changing what you were going to say	Getting stuck before or in the middle of a word (a block)
No visible effort	Tension, head-nodding, eye-blinking, or avoiding words or situations

How typical disfluency and stuttering differ (ASHA).²

NIDCD describes stuttering as repetitions of sounds, syllables, or words; prolongations of sounds; and interruptions known as blocks. A person who stutters knows exactly what they want to say but has trouble producing a normal flow of speech.³

When it starts, and how often it resolves

ASHA reports that about 95% of children who stutter start before age 4, with an average onset around 33 months; onset may be gradual or sudden. NIDCD estimates that 5–10% of all children stutter for some period, lasting from weeks to years.^1,3

~88–91%estimated recovery rate for children who stutter, with or without intervention (ASHA, citing Yairi & Ambrose, 2013).¹

ASHA notes recovery rates may be lower in some groups, and that disfluencies can seem to disappear for weeks or months and then return. Risk factors for persistent stuttering include being a boy and a family history of persistent stuttering; about 60% of people who stutter report a relative who stutters.¹

How to respond at home

Listen to what your child is saying, not how they say it. Don’t finish their words or tell them to “slow down.”
Give your child time; keep your own pace relaxed and unhurried.
Make talking feel easy — avoid putting your child on the spot to speak in front of others.
Notice patterns (tired, excited, rushed) and share them with an SLP.

NIDCD advises listening attentively and focusing on the content of a child’s message rather than on how it is said, without interrupting.³

When to see a speech-language pathologist

Disfluency has lasted more than about six months.
You hear part-word repetitions, prolonged sounds, or blocks.
You see tension, struggle, or your child avoids talking or certain words.
There is a family history of stuttering.
Your child is worried or upset about their speech.

Stuttering is diagnosed by a speech-language pathologist, who considers the case history and assesses whether a child is likely to continue stuttering or outgrow it. In the UK, the NHS notes treatment is often successful in pre-school children and that in many areas you can refer your child directly to children’s speech and language services.^3,4

Stuttering and speech sound problems can co-occur: ASHA reports that about 8% of children with speech sound disorders also stutter. In the UK, the RCSLT confirms you can self-refer to NHS speech and language therapy; in the US, ASHA ProFind lists certified SLPs.^6,7,8

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An honest note

SpeechStep is practice for speech sounds. It does not assess or treat stuttering.

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Frequently asked questions

Is it normal for a young child to stutter?＋

Bumpy speech is common. ASHA notes all speakers are disfluent at times, and that many children go through normal periods of disfluency lasting less than six months while learning lots of words and sounds. Stuttering itself usually starts between 2 and 6, and NIDCD estimates 5–10% of all children stutter for some period.

What is the difference between normal disfluency and stuttering?＋

Typical disfluencies include “um” and “uh,” repeating whole words or phrases, and changing what you say. People who stutter usually have more disfluencies, and different types: repeating parts of words (“b-b-ball”), stretching a sound out, or getting stuck before or in the middle of a word — sometimes with tension, or avoiding words and situations.

Will my child outgrow stuttering?＋

Most do. ASHA cites estimates that about 88–91% of children recover, with or without intervention, though rates may be lower in some groups. Boys and children with a family history of persistent stuttering are more likely to keep stuttering. Early advice is still worthwhile: the NHS notes treatment is often successful in pre-school children.

Can SpeechStep help with stuttering?＋

No. SpeechStep is practice for speech sounds; it does not assess or treat stuttering. If you are concerned about stuttering, see a speech-language pathologist — stuttering is diagnosed and treated by SLPs.