Jade Thirlwall Can’t Burp. What “No-Burp Syndrome” Is, and the Honest Answer to Her Question About Botox and Her Voice

For most people a burp is so automatic it barely registers. Jade Thirlwall, 33, the Little Mix singer, has spent her life without one, and this month she said so in the comments of a TikTok. Under a video by the British campaigner Gemma Renwick, who posts about being unable to burp for four decades, Thirlwall wrote, as reported by PA: “Omg I finally feel so seen and understood.” Not being able to burp had always been a fun fact, she added, but it had “caused issues my whole life,” and on stage she was often “just bloated af.” Then came the line with a real question in it: “I want to get the throtox but worried it will affect my vocals.”

The thing she was describing has a name, a treatment and a surprisingly short history. Here is what it is, what the research says about the Botox she mentioned, and the honest answer to her question about her voice.

The conditionA valve that will not open upward

The medical name is retrograde cricopharyngeus dysfunction, or R-CPD. The cricopharyngeus is a ring of muscle at the top of the oesophagus that stays closed most of the time and relaxes to let food down. To burp, it also has to relax the other way, to let a bubble of air back up. In R-CPD it does not, so the gas that would have left as a belch has nowhere to go but down, or nowhere at all. The typical result is a set of four complaints: no burps, gurgling noises in the neck or chest, pressure and bloating in the chest and belly, and a lot of flatulence. In a 2024 survey of 199 members of an online community for the condition, 99% could not burp, 98% reported bloating, 93% gurgling and 89% excessive gas; more than half also found it hard to vomit. (That sample chose itself, so treat it as a portrait, not a prevalence.) A UK series noted that symptoms were worse with fizzy drinks and beer.

It was only named in 2019, when the Chicago-area laryngologist Robert Bastian and a colleague described 51 patients and proposed the term. Their paper includes an unusual acknowledgement: without the authors’ knowledge, the first patient “posted his experience to the Internet (Reddit),” and further patients “self-presented when their Internet searches stumbled upon Reddit.” The condition was, in a real sense, found by the people who have it. How common it is, nobody knows: no population study has measured it, and a 2026 review notes that R-CPD “lacks a validated diagnostic test.” Diagnosis rests mainly on the history, taken by an ear, nose and throat specialist or laryngologist; some centres add pressure measurements taken while you drink something carbonated.

The treatmentWhat “throtox” is

“Throtox” is the internet’s word for the standard treatment: botulinum toxin injected into the cricopharyngeus to weaken it for a few months, long enough, the theory goes, for the body to learn to burp. It is done either in an operating room under brief general anaesthesia, through a scope, or in a clinic through the skin of the neck, guided by a needle that reads the muscle’s electrical activity. The reported results are strikingly good, with an asterisk.

The asterisk is the design. Almost all of this evidence comes from case series, where everyone gets the treatment and nobody gets a placebo, and several of the largest come from the clinic that named the condition and offers the procedure. The one study with an untreated comparison group, from Sydney, was small but clear: 92% of treated patients could belch at three months and none of the untreated could. Results also vary with technique. An Italian series using lower in-office doses saw 55% respond at a month, and a New York study of nearly 200 patients found about a quarter of in-office patients needed a second injection within eight weeks. The most common side effect, in the 2025 meta-analysis, is temporary difficulty swallowing, in about half of patients; Bastian’s own clinic tells patients that swallowing feels “peculiar initially, especially for solid foods.”

Her questionWould it affect a singer’s voice?

This is the question nobody in the coverage answered, so here is what exists. The cricopharyngeus sits just below the voice box, not in it, and the injection targets the muscle rather than the vocal cords. Bastian’s patient site says a voice change “rarely happens with O.R. injections and occasionally happens after EMG guided injection in an office setting.” In one early in-office series of 18 patients, seven had temporary noisy breathing that resolved. What does not exist is a study of singers or other professional voice users with R-CPD. So the honest answer to Thirlwall’s worry is that voice effects are reported as uncommon and temporary, somewhat more so with the in-office technique, and that nobody has measured what happens to a trained singing voice specifically. It is exactly the question to bring to a laryngologist, and conveniently, many of the specialists who treat R-CPD are voice doctors.

There is no proven home fix. A Yale team has described a burp-retraining protocol with a speech-language pathologist, but it was used in seven patients, after incomplete responses to Botox, not instead of it. In the UK, Renwick started a Parliament petition asking for a review of NHS access to treatment, saying “too many sufferers are dismissed or misdiagnosed before paying privately for treatment”; it had 6,396 signatures on September 21 and runs until December 22.

If you have never managed a burp and recognise the gurgling, the pressure and the rest, the useful step is a calm one: ask for a referral to an ENT or laryngology clinic, and the word “R-CPD” written down so it does not get lost. If your problem is the opposite, plenty of burps that smell of eggs, that has its own explainer, and our guides to bloating and gas cover the everyday causes. Jade Thirlwall and Gemma Renwick had no involvement in this article. It is educational, describes what the cited studies and reports say, and is not medical advice.