My Child Has a Lisp — Should I Be Worried?

“My child has a lisp… should I be worried?”

This is one of the most common questions we hear at Marigold Speech & Co LLC — and the honest answer is: it depends (don’t you just love that answer?).

Let’s break it down in a way that actually makes sense.

The “S” Sound Can Be Tricky

The /s/ sound is one of the more complex speech sounds for young children to master. It requires:

• Precise tongue placement

• Strong airflow control

• Coordination between the tongue and teeth

Because of this, the /s/ sound is typically mastered by 4.5 years old. So if your 3- or young 4-year-old has a lisp, that may still fall within normal development.

What Is a Lisp, Exactly?

A lisp happens when the tongue is not positioned correctly for the /s/ (and often /z/) sound.

There are a few different types of lisps:

1️⃣ Interdental (Frontal) Lisp

The tongue pushes between the teeth (“thun” instead of “sun”).

This is common in younger children and may resolve on its own before age 4.5.

2️⃣ Lateral Lisp

Air escapes over the sides of the tongue, creating a “slushy” or wet-sounding S.

👉 Important: A lateral lisp is not considered developmentally typical at any age.

It does not usually resolve on its own.

The good news?

A lateral lisp can absolutely be remediated with speech therapy. With proper placement training and structured practice, children can learn to produce a clear, accurate /s/ sound.

3️⃣ Palatal Lisp

The tongue is positioned too far back in the mouth and contacts the hard palate during production of /s/ or /z/. This causes the sound to come out distorted and sometimes slightly “sh”-like.

Instead of the airflow moving forward through a narrow groove at the front of the mouth, the air is redirected toward the roof of the mouth, which changes the sound quality.

👉 A palatal lisp is not considered developmentally typical and generally does not resolve without intervention.

The good news?Like other articulation distortions, a palatal lisp can be successfully treated in speech therapy. Therapy focuses on teaching correct tongue placement, establishing the proper airflow pattern, and building accuracy through structured practice across words, sentences, and conversation.

So… Should You Be Worried?

Here’s a simple guide:

• ✅ Under 4.5 years old with a frontal lisp → Likely still developing

• ⚠️ Over 4.5 and still lisping → Worth a screening

• ⚠️ Slushy or lateral-sounding S at any age → Get it checked

• ❤️ Parent gut says something feels off → Trust that instinct

You know your child best.

Why Early Evaluation Matters

Even if it’s “just an S sound,” persistent lisps can:

• Impact speech clarity

• Affect confidence

• Carry into elementary school

• Be harder to correct later

A quick screening can provide peace of mind — or early intervention if needed.

Speech Therapy for Lisps in Wisconsin

If you’re in Wisconsin and wondering whether your child’s lisp is developmentally appropriate, we’re happy to help.

At Marigold Speech & Co LLC, we specialize in:

• Pediatric speech sound disorders

• Lisp correction (including front and lateral lisps)

• Articulation therapy

• Early intervention speech services

📍 Serving families across southern Wisconsin

📞 Call or text: 608-728-7774

If your child has a lisp and you’re unsure what to do next, reach out. Sometimes reassurance is all you need. And sometimes early support makes all the difference.

Either way — you don’t have to figure it out alone. ❤️