Selective Mutism

Overview

Selective mutism is an anxiety disorder where a person is unable to speak in certain situations, such as school or public places, even though they can speak comfortably in other settings, like at home.

It is not very common, affecting roughly 1 in 140 children. It is more often noticed in young children, usually between ages 3 and 8.

It most often affects children, especially girls, but it can also persist into adolescence and adulthood if not treated. It is not caused by a speech delay or by being stubborn.

Symptoms

Common symptoms

• Speaking normally at home or in familiar places, but staying silent in specific situations like school or in public.
• Being unable to start or respond to conversations in certain settings.
• Freezing, avoiding eye contact, or looking nervous when expected to speak.
• Using pointing, nodding, or writing instead of speaking.

Symptoms in children

• Consistently refusing to speak in class, with teachers, or with unfamiliar children.
• Speaking only to immediate family members or close friends.
• Wanting to speak but feeling physically stuck or panicked.
• Trouble at school when asked to read aloud or answer questions.

Symptoms in older adults

• In older adults, selective mutism may appear as suddenly not speaking in certain social situations, often related to extreme anxiety or trauma.
• It can also be a sign of a different condition, so a doctor's review is important if a previously talkative person becomes silent.

Causes

Main causes

• Most experts see selective mutism as an extreme form of social anxiety. The brain treats certain social settings as threatening, making speech feel impossible.
• A family history of anxiety disorders can increase the chance of it developing.
• A sensitive or inhibited temperament may also play a role.

Risk factors

• Being bilingual or multilingual, especially when switching between languages at school or in public.
• Having a parent or close relative with anxiety or selective mutism.
• Experiencing stressful events, such as moving to a new country or starting a new school.
• Being naturally shy or very cautious as a young child.

When to see a doctor

See a doctor urgently if:

• If the mutism begins suddenly alongside other worrying symptoms like weakness, confusion, or severe headache, seek urgent medical care.

Book a routine appointment if:

• If your child regularly cannot speak in school, with other children, or in public places for more than a month, talk to your GP or health visitor.
• If the anxiety is interfering with friendships, learning, or family life, ask for a referral.

Diagnosis

A doctor, health visitor, or child mental health professional will ask about your child's speech in different settings, look at their development overall, and may speak with school staff.

Tests that may be done

• A hearing test to rule out hearing loss.
• A speech and language assessment to understand communication skills.
• Observation by a mental health professional in different settings.

What to expect at your appointment

The professional will want to see patterns: where your child speaks, where they do not, and how long it has been happening. They may observe your child in the clinic, at home, or at school. There is no blood test or medical scan for selective mutism.

Treatment

Treatment focuses on lowering anxiety and building confidence step by step. The child is gradually helped to speak in harder situations, without force or pressure. Family and school involvement is essential.

Self-care at home

• Do not force the child to speak or punish them for staying silent.
• Accept non-verbal communication at first, like nodding or pointing, while gently encouraging speech.
• Create relaxed, low-pressure moments where the child can talk without fear of being judged.
• Praise any attempt to communicate, whether with words, whispers, or gestures.

Medical treatments

There is no first-line medication for selective mutism. In some cases, a child psychiatrist might suggest medication to reduce anxiety while therapy is underway, but this is always a careful decision made with a specialist. Never give any over-the-counter medication for this without a doctor's advice.

When is surgery considered?

Not applicable – surgery is not used for selective mutism.

Living with this condition

Build a predictable routine and prepare your child for new situations. Offer extra time to warm up, use visual aids, and celebrate small steps. At home, keep communication open and relaxed.

Lifestyle tips

• Keep consistent daily routines to reduce overall anxiety.
• Arrange small playdates with one or two children to practice speaking in safe, supervised settings.
• Encourage hobbies the child enjoys, which build confidence and might naturally lead to speaking.

Diet and exercise

There is no special diet that treats selective mutism, but a balanced diet, enough sleep, and regular physical activity can help reduce anxiety symptoms overall.

Mental health and emotional wellbeing

Living with selective mutism can be exhausting and isolating. The person may feel frustrated, ashamed, or misunderstood. It is important to acknowledge these feelings and involve a counselor or psychologist if the anxiety becomes overwhelming.

Prevention

Selective mutism cannot be prevented, but early recognition and early help can prevent it from becoming a long-term pattern.

Screening programmes

There is no routine national screening for selective mutism, but health visitors and schools may notice a child who is unusually silent and can raise it with the family.

Complications

If left untreated

• Difficulty making and keeping friendships.
• Problems at school, including avoiding speaking in class or missing out on group activities.
• Ongoing social anxiety, low confidence, and depression.

Long-term outlook

The outlook is hopeful. With early, patient help, most children overcome selective mutism and go on to speak confidently in all areas of life. Even for older children and adults, improvement is very possible with the right support.

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