Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.

What to expect


A Lisp is a speech impediment and often results in a child having difficulty in producing the sounds ‘s' and ‘z'. This results in the child substituting these sounds for a ‘th' sound. This can cause communication difficulties depending upon severity and also affect a child's confidence about communicating. Speech and language therapy can treat and support individuals who have a lisp by improving their ability to communicate more effectively.

What is a Lisp?

A Lisp develops through incorrect placement of the tongue during speech production most commonly with the sounds ‘s' and ‘z'. A lisp can be categorised into the following:

Interdental Lisp

This is when the tongue protrudes between the teeth during the sound production of ‘s' and ‘z'. This leads to a ‘th' sound instead.

Lateral Lisp

This is when air is escaping along the sides of the tongue. Leading to speech sounding wet as the saliva can be heard as well as the sound of the speech sound.

What causes a Lisp?

A cause of a lisp can be identified as either psychological or physiological. This is because there may be a medical reason for someone to have a lisp, or it may be more to do with stress or trauma. Although it can be categorised this way, there is no exact cause for a lisp and is more to do with habitual speech patterns when speech is developing.

What problems caused by a Lisp can speech and language therapy help with?

The following areas of difficulty caused by a lisp can be improved through speech and language therapy:

By working on these areas, a child may develop coping strategies to overcome the Lisp and improve the fluency of their speech. As a Lisp is habitual, the more work a child can put in outside of speech therapy sessions, the more progress they will make.

How does speech and language therapy help a lisp?

Speech and language therapy can improve a child's communication skills and help them to develop coping strategies and management of their Lisp. This may result in a child becoming more confident and therefore more fluent in their production of speech. A child may also be able to change the way in which they produce a certain speech sound.

What would speech and language therapy treatment for a Lisp involve?

Speech and language therapy may include one or more of the following methods:

Specific treatment for a lisp can include articulation therapy.

An initial assessment will be carried out by one of our Speech and Language Therapists. This will highlight any worries and difficulties concerning communication and speech. It will also provide a chance for you to share any concerns you may have, and allow you to discuss what you would like to work on and improve.

How do I arrange a speech and language therapy assessment?

To arrange an assessment for your child with one our speech and language therapists please email or call 0330 0885 643.


A Lisp is a habitual method of speech production and can differ in severity depending upon each individual child. A lisp can be either inter dental or lateral and speech and language therapy can help an individual cope with or change the way in which they produce certain speech sounds. If you feel you or your child may benefit from speech and language therapy please email or call 0330 0885 643.

Back to top ↑

Next steps

To speak to a Speech and Language Therapist or to book an appointment, call us on 0161 883 0111 or email


Follow us on social media

We're registered

All our speech and language therapists are registered with the RCSLT and the HCPC

Royal College of Speech and Language Therapists Logo HCPC Logo

Say hello...

We are always happy to answer any questions you might have. You can contact us in the following ways:

We work with... © 2018
Powered by Nuttersons