Selective Mutism in Children: Signs, Causes, and How It Is Treated
Selective mutism is an anxiety disorder in which a child speaks comfortably in some places — usually home — but consistently cannot speak in others, such as school, for at least a month. ASHA stresses children do not choose this. It usually starts at 3 to 6, affects about 0.2–1.6% of children, and is treatable.
What selective mutism is
ASHA describes selective mutism as a complex anxiety disorder that affects pragmatic language. Children are not choosing silence: they are more comfortable speaking in select situations, and the failure to speak is a form of self-protection from anxiety.1
| Feature | What it means |
|---|---|
| Consistent failure to speak | In specific social situations where speaking is expected (e.g., school), despite speaking in others |
| Duration | At least 1 month, not limited to the first month of school |
| Not a language gap | Not due to lack of knowledge of, or comfort with, the language required |
| Not better explained | Not better explained by a communication disorder such as stuttering, or only by autism or a psychotic disorder |
Diagnostic features, as summarized by ASHA from the DSM-5-TR.1
Signs and who is affected
- Talks freely at home but is silent at school or with certain people.
- May speak to some people in a setting but not others, or freeze during specific tasks like reading aloud.
- Physical signs of anxiety: freezing, stiff body, little facial expression or eye contact.
- Clinging, meltdowns, or school refusal when speaking is expected.
These signs come from ASHA’s Practice Portal, which reports onset typically between 3 and 6 years, with diagnosis often when a child starts school. Most prevalence estimates range from 0.2% to 1.6%, somewhat higher among immigrant children, language-minority children, and children with speech and language delays.1
What contributes to it
ASHA lists contributing factors including psychological factors such as social phobia and separation anxiety, a hereditary predisposition to selective mutism and social anxiety, neurodevelopmental vulnerabilities such as delays in speech, language, or motor milestones, and an overactive autonomic nervous system response.1
Assessment is a team effort that may include a pediatrician, a psychologist or psychiatrist, an SLP, the teacher, and the family. Because some children will not talk at the appointment, ASHA notes the SLP may ask for home video or audio recordings.1,2
Free Speech Milestone Checker
Check your child’s speech and language milestones — in 2 minutes.
How it is treated
| Technique | How it works |
|---|---|
| Stimulus fading | Start with a comfortable speaking partner, then gradually add new people or settings |
| Shaping | Reward small steps — from gestures or whispers toward full speech |
| Self-modeling | The child watches or hears recordings of themselves talking comfortably at home |
| Systematic desensitization | Relaxation with gradual exposure to harder situations |
| Cognitive behavioral approaches | Address anxious thoughts such as “everyone will laugh at me” |
ASHA calls early intervention key, and warns about “rescuing” — speaking for a distressed child — which can reinforce avoidance of speaking. Integrated behavioral therapy for selective mutism was originally developed for children aged 4–8. A doctor may suggest medication for anxiety in some cases. Find an SLP through ASHA’s ProFind.1,2,3
About SpeechStep
SpeechStep is speech-sound practice and does not assess or treat selective mutism. If your child talks at home but not elsewhere, talk to your pediatrician or an SLP.
Frequently asked questions
What is selective mutism?＋
ASHA describes it as a complex anxiety disorder that affects pragmatic language. Using the DSM-5-TR criteria, a child consistently fails to speak in specific social situations where speaking is expected (such as school) despite speaking in others, for at least a month — not limited to the first month of school.
Is my child just shy or being stubborn?＋
No. Despite the word “selective,” ASHA explains that children with selective mutism do not choose where to speak; they are more comfortable speaking in some situations. Their silence is a way of protecting themselves from anxiety, though it may be misread as defiance.
Does selective mutism go away?＋
It can resolve in childhood, but ASHA notes it may also persist into adolescence and adulthood or develop into another anxiety disorder, which is why early intervention is considered key.
Can bilingual children have selective mutism?＋
Yes, but the diagnosis requires that not speaking is not due to a lack of knowledge of, or comfort with, the language required. ASHA notes prevalence can be somewhat higher among immigrant and language-minority children, so careful assessment matters.
Put this into practice today
Try the free speech milestone checker, or start daily AI speech practice — every child takes one SpeechStep at a time.
References
3 sources from authoritative bodies. Last reviewed October 2026.
- 1.ASHASelective Mutism — Practice Portal page.
- 2.ASHASelective Mutism — Consumer page.
- 3.ASHAASHA ProFind: Find a Certified Speech-Language Pathologist — Referral directory.