Lisping
What is Pediatric Lisping?
A lisp is a speech sound difference or disorder that affects how a child produces certain sounds—most commonly /s/ and /z/. Instead of producing a clear “s” sound, a child may produce a sound closer to “th,” or the sound may seem slushy, muffled, or distorted.
Lisping can be a normal part of early speech development, particularly in younger children who are still learning how to coordinate their tongue, teeth, lips, and airflow. However, when a lisp persists beyond the age when these speech sounds are typically mastered, or when it makes a child difficult to understand, an evaluation by a speech-language pathologist (SLP) may be helpful.
Common Types of Lisps
Interdental lisp:
The tongue comes forward between the teeth when producing /s/ or /z/. For example, “sun” may sound more like “thun.”
Dentalized lisp:
The tongue presses against the front teeth rather than staying behind them, causing /s/ and /z/ to sound less clear.
Lateral lisp:
Air escapes over the sides of the tongue instead of flowing down the center. This can create a “slushy” or “wet” sounding /s/ or /z/.
Palatal lisp:
The tongue makes contact too far back toward the roof of the mouth, resulting in a distorted sound.
Pediatric Dysarthria Signs & Symptoms
Signs can vary depending on the type and severity of the lisp. Parents and caregivers may notice:
- /s/ and /z/ sounds that are consistently distorted
- “S” sounding more like “th”
- A slushy, wet, or muffled quality when producing certain sounds
- The tongue visibly pushing between the front teeth while speaking
- Difficulty directing airflow through the center of the mouth
- Trouble producing words containing /s/ or /z/ clearly
- Speech that is more difficult for unfamiliar listeners to understand
- Difficulty carrying a correctly produced sound from practice into everyday conversation
- Frustration when others ask the child to repeat themselves
- Avoiding certain words or becoming self-conscious about speaking
Some children may also have difficulty with additional speech sounds, so an SLP will look at the child’s overall speech sound development rather than focusing only on the lisp.
When Should Parents Be Concerned?
Because speech develops gradually, hearing an occasional lisp in a young child doesn’t necessarily indicate a speech disorder. However, parents may want to consider a speech evaluation if the lisp persists as the child gets older, is noticeably distorted, affects intelligibility, or causes frustration or embarrassment.
An evaluation can also help determine whether factors involving oral structures, dental development, tongue placement, or other speech sound patterns may be contributing.
How Therapy Smarts Supports Children with Lisping?
At Therapy Smarts, our pediatric Speech-Language Pathologists can evaluate a child’s speech and determine what is contributing to the lisp. Rather than simply telling a child to “say your S correctly,” therapy can teach the specific oral movements and airflow patterns needed to produce clearer speech.
Depending on the child’s individual needs, speech therapy may work on:
- Tongue placement: Teaching the child where to position their tongue for accurate speech sounds.
- Airflow: Helping the child learn to direct air appropriately through the center of the mouth.
- Sound production: Practicing /s/, /z/, or other affected sounds individually before progressing to syllables and words.
- Sentences and conversation: Once a child can produce a sound correctly, therapy can help them use it naturally during everyday speech.
- Awareness and self-monitoring: Older children may learn how to recognize when a sound is produced correctly and independently make adjustments.
Therapy Smarts uses individualized, child-centered and play-based pediatric therapy to make practicing speech skills engaging and functional. If an evaluation identifies needs beyond speech production, Therapy Smarts also provides Occupational Therapy, Physical Therapy, ABA, Mental Health services, and Psychological Evaluations, allowing families to access multiple pediatric services within one organization.
Helping Kids Communicate With Confidence
Clear speech can make a difference in how confidently children communicate at home, at school, and with friends. If you’re concerned about your child’s lisp or speech development, a pediatric speech evaluation can help determine whether additional support would be beneficial.
Wondering About Developmental Milestones?
Have questions about your child’s development, or wondering if a certain diagnosis may be a fit? Try out our developmental screening tool— it’s a fast, free way to get a snapshot of your child’s progress on his or her developmental milestones.
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