How Gaten Matarazzo’s Rare Condition Became Part Of His Character’s Storyline In ‘Stranger Things’

Gaten Matarazzo is basically the poster child for “yes, you can be different and still steal the whole scene.” But behind Dustin’s snarky charm in Stranger Things, there’s a real-life condition that shaped more than just a backstory. It shaped casting conversations, public reactions, and even how the show chose to tell the truth.

Here’s the complicated part, CCD, cleidocranial dysplasia, is genetic and it affects bone and teeth development, including underdeveloped collarbones. For Gaten, that meant no collarbones at all, and the “charming pearly whites” fans see on screen are fake. Even in interviews, he admitted CCD made acting gigs harder, since some casting directors couldn’t see past it, and it took Stranger Things to break through that wall.

So when the showrunners decided to work CCD into Dustin’s storyline, it didn’t just add realism, it turned Dustin into a character who owns his differences, and fans took notice.

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Gaten, who turned 22 this past Sunday, didn’t just pull this rare disorder out of thin air. CCD is a genetic condition that affects bone and teeth development, causing issues like underdeveloped collarbones—or in his case, no collarbones at all. Also, those charming pearly whites of his that we see? They're fake.

That’s why the Season 4 clip hits harder than it should, because Gaten’s real CCD details are baked into what Dustin goes through.

Embracing Differences

Gaten Matarazzo's openness about his condition, cleidocranial dysplasia, resonates deeply with audiences and can have significant social implications.

Gaten doesn’t shy away from conversations about his condition.

Netflix

And right after Gaten turned 22 this past Sunday, it’s impossible not to think about that 2018 interview where he said CCD made auditions tougher.

In a 2018 interview, Gaten admitted that CCD had made it tough to land acting gigs. Many casting directors couldn’t quite see past his condition, but Stranger Things was the glorious exception.

When Gaten landed the role, the showrunners decided to incorporate CCD into Dustin’s character, making it real and relatable. And let’s be honest, if there’s one thing Dustin knows how to do, it’s own his differences and turn them into pure gold.

What’s even cooler? Gaten gave the thumbs-up to having his character bullied because, as he put it, “It's realistic.” For him, raising awareness about the condition was not just personal but also an important opportunity to educate viewers. 

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When your favorite actor isn’t just on screen but also leading real-world conversations.

The showrunners didn’t treat it like a random detail, they made it part of Dustin’s character so it would feel real, not glossed over.

He didn’t shy away from his condition or let it define him. Instead, he showed the world that having CCD doesn’t stop him from slaying both monsters—and auditions.

We’ve watched Gaten grow up, and let’s just say his style game is leveling up faster than Eleven’s powers.

Jeff Vinnick/NHLI via Getty Images

Even his take on bullying, “It’s realistic,” lands like a punch, because it’s tied directly to how his openness helped bring cleidocranial dysplasia into the conversation.

Thanks to Gaten's openness, more people have become aware of cleidocranial dysplasia, a condition that reportedly affects one in a million. However, the number could be higher since milder cases often go unnoticed. 

The effects can range from the top of the skull to the soles of the feet.

Producers should consider integrating educational elements into storylines, allowing audiences to engage with the themes meaningfully while fostering a culture of acceptance and understanding.

Gaten Matarazzo’s rare condition being woven into his character’s storyline in Stranger Things exemplifies how personal experiences can enhance mainstream narratives. This approach not only adds depth to storytelling but also serves a broader societal purpose. By integrating Matarazzo’s experiences with cleidocranial dysplasia into the fabric of the show, the creators foster a sense of connection and understanding among viewers from diverse backgrounds.

Such representation encourages empathy and prompts audiences to embrace differences. As we eagerly anticipate the next season of Stranger Things, it is essential to consider how these authentic narratives can influence our perceptions and cultivate compassion in our communities.

Dustin’s storyline didn’t just get a glow-up, it gave Gaten a way to turn a hard truth into something fans can recognize.

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