Sandifer syndrome is a rare movement disorder in which a child’s body contorts into alarming postures, including arching of the back, twisting of the neck, and stiffening of the limbs, not because of a neurological disease but because of gastroesophageal reflux. First described in 1962, the condition remains widely misdiagnosed as epilepsy or a musculoskeletal problem, sometimes for years, leading to unnecessary medications and delayed treatment of the actual cause.
What Sandifer Syndrome Looks Like
The hallmark of Sandifer syndrome is sudden, dramatic posturing that tends to happen during or shortly after feeding. A baby may arch sharply backward, extend or twist the neck to one side (torticollis), and hold that position for seconds to minutes before relaxing. The episodes look involuntary and distressing. Parents often describe them as seizure-like, and clinicians who are unfamiliar with the syndrome frequently agree. In one documented case, a newborn presented with torticollis, dystonic neck movements tied to feeding, episodic vomiting, inspiratory stridor, and even hand tremor within the first month of life.1The Turkish Journal of Pediatrics. A case of Sandifer’s syndrome with hand tremor The movements are paroxysmal, meaning they come in bursts, and between episodes the child often appears completely normal.
Because the posturing involves sustained muscle contraction rather than the rhythmic jerking typical of many seizure types, trained neurologists can sometimes spot the difference on visual inspection alone. But in a panicked emergency room or a short office visit, the distinction is easy to miss. The episodes may also include eye deviation and brief unresponsiveness, which further clouds the picture.
Why the Body Contorts
The posturing in Sandifer syndrome is not random. It appears to be a reflexive response to the pain or discomfort of acid reflux. When stomach acid rises into the esophagus, sensory nerve fibers carried by the vagus nerve relay that irritation to the brainstem. From there, signals travel through brainstem relay nuclei and ultimately cause involuntary contraction of the trapezius and sternocleidomastoid muscles in the neck and upper back, producing the characteristic head-turning and arching.2PubMed. Neuroanatomical basis of Sandifer’s syndrome: a new vagal reflex?
One theory is that the posturing itself serves a purpose. By arching the back and extending the neck, the child may be instinctively changing the geometry of the esophagus or the pressure in the chest in a way that temporarily relieves the reflux discomfort. Think of it as a pain-avoidance posture that the nervous system has automated. This would explain why the movements cluster around feeding times, when reflux is most active, and why they stop once the reflux is treated.
How Common Is It
Sandifer syndrome is genuinely rare. Between its initial description in 1962 and a 2019 review, only somewhere between 40 and 65 cases had been reported in the medical literature.3Open Journal of Pediatrics. Sandifer’s Syndrome in a 3-Month-Old Male Infant: A Case Report That number almost certainly underestimates the true count, because many cases are likely resolved by treating reflux without the syndrome ever being formally identified. There is no sex predilection; boys and girls are affected equally. Most reported patients are young, neurologically normal children, though the syndrome has also been documented in children with pre-existing neurological conditions.
The rarity itself is part of the diagnostic problem. A pediatrician who has never encountered the syndrome may not think to look for it, especially when the presentation so closely mimics conditions that are more familiar. Gastroesophageal reflux disease is common in infants, affecting a sizable minority in the first year of life, but the subset who develop the full dystonic posturing of Sandifer syndrome is tiny.
The Misdiagnosis Problem
Misdiagnosis is the central clinical concern with Sandifer syndrome. The condition is frequently mistaken for infantile spasms, focal epilepsy, or various musculoskeletal disorders.4PubMed Central. Sandifer Syndrome: A Case Report In one case series, two patients were incorrectly diagnosed with infantile spasms and treated with antiepileptic drugs before anyone connected the episodes to their gastrointestinal symptoms.5Pediatrics International. Sandifer Syndrome: A continuing problem of misdiagnosis Antiepileptic medications carry real side effects, especially in infants, and they do nothing for reflux-driven posturing.
The consequences of getting the diagnosis wrong extend beyond ineffective medication. Reviews of published cases have found that many patients with Sandifer syndrome were originally given various neuropsychiatric diagnoses, leading to unnecessary testing and drugs with significant side effects that could have been avoided with earlier recognition.6PubMed Central. Diagnosis and management of Sandifer syndrome in children with intractable neurological symptoms In some instances, long-term misdiagnosis has resulted in children receiving antiepileptic medication for extended periods with no improvement in symptoms.7PubMed Central. Aspiration pneumonia secondary to GERD (Sandifer syndrome) in a malnourished infant: a case report
The frustrating irony is that the correct diagnosis often becomes obvious in hindsight. The episodes cluster around meals or shortly after. An EEG during the posturing shows no epileptic activity. And the child may have other classic signs of reflux, like spitting up, irritability during feeding, or poor weight gain, that were either overlooked or attributed to something else.
How Sandifer Syndrome Is Diagnosed
There is no single test that stamps a child with a Sandifer syndrome diagnosis. Instead, the diagnosis rests on recognizing the pattern: dystonic posturing that correlates with reflux, a normal EEG, and objective evidence of gastroesophageal reflux disease. An EEG performed during an episode is one of the most useful steps, because it rules out epilepsy by showing no seizure discharges at the very moment the child is arching and twisting.
To confirm the reflux component, clinicians typically use pH monitoring of the esophagus, an upper GI series, or sometimes endoscopy. If the reflux is documented and the episodes resolve with anti-reflux treatment, the diagnosis is essentially confirmed retroactively. This treat-and-observe approach is common in practice because the syndrome is rare enough that most clinicians have limited experience with it and rely on the treatment response to close the loop.
One practical red flag for parents and providers: if a child has been treated for seizures and the episodes have not improved despite adequate antiepileptic therapy, Sandifer syndrome should be on the list of alternative explanations, especially if the child also has feeding difficulties or frequent spit-up.
Treatment
Because Sandifer syndrome is driven by reflux, treating the reflux resolves the posturing. The approach follows the same ladder used for pediatric GERD more broadly: positioning strategies, dietary modifications, acid-suppressing medication, and in refractory cases, surgery.
For infants with suspected milk protein sensitivity contributing to their reflux, a switch to a specialized formula can be remarkably effective. In one reported case, switching to an amino acid-based formula led to a significant decrease in irritability within four days, and complete resolution of the arching and irritability within two weeks.8PubMed Central. Treatment of Sandifer Syndrome with an Amino-Acid–Based Formula That case highlights how the syndrome sometimes traces not just to generic reflux but to a specific dietary trigger that amplifies the reflux.
When medical management fails, surgical correction of the reflux becomes an option. Laparoscopic fundoplication, a procedure where the top of the stomach is wrapped around the lower esophagus to prevent acid from rising, has been used successfully. One report described near-complete resolution of symptoms three months after a laparoscopic Nissen fundoplication.9PubMed. Sandifer syndrome–a multidisciplinary diagnostic and therapeutic challenge In larger surgical series looking at fundoplication for pediatric GERD complications, Sandifer syndrome has been included among the recognized indications for the procedure.10JAMA Pediatrics. Surgical Treatment of Gastroesophageal Reflux in Children: Results of Nissen’s Fundoplication in 100 Children Surgery is not the first-line approach, but when reflux is severe and the child’s posturing has not responded to medication and dietary changes, it can be definitive.
Growth and Nutritional Impact
One of the less dramatic but clinically important consequences of unrecognized Sandifer syndrome is its effect on a child’s growth. Severe reflux can cause pain with feeding, leading the infant to refuse food or eat very little. Chronic vomiting compounds the problem by preventing the child from retaining adequate calories. Over time, this pattern can lead to failure to thrive, a clinical term for a child who is not gaining weight at the expected rate.
In more severe cases, the reflux can cause esophageal irritation that leads to gastrointestinal bleeding, further worsening the child’s nutritional status. Aspiration of refluxed stomach contents into the lungs is another serious complication, and at least one reported case involved an infant who developed aspiration pneumonia secondary to the GERD underlying a Sandifer syndrome diagnosis.11PubMed Central. Aspiration pneumonia secondary to GERD (Sandifer syndrome) in a malnourished infant: a case report These complications underscore why treating the reflux promptly matters beyond just stopping the abnormal movements.
Sandifer Syndrome in Adults
Nearly every discussion of Sandifer syndrome frames it as a pediatric condition, and that is largely accurate. But it is not exclusively pediatric, and the handful of adult cases in the literature reveal just how far the diagnostic delay can stretch when clinicians are not looking for it.
One adult patient developed episodic cervical dystonia linked to gastroesophageal reflux, representing the first recognized case of Sandifer syndrome with onset in adult life.12PubMed. Episodic cervical dystonia associated with gastro-oesophageal reflux. A case of adult-onset Sandifer syndrome Another involved a 27-year-old man with intellectual disability and no prior seizure history who presented with abdominal pain, head and eye turning, and unresponsiveness. He was diagnosed and treated as having partial seizures before the real cause was identified. That case was described as only the second report of Sandifer syndrome in an adult.13Epileptic Disorders. Sandifer syndrome misdiagnosed as refractory partial seizures in an adult
Perhaps the most striking adult case involved a woman initially diagnosed with focal epilepsy who was treated ineffectively with anticonvulsants for two years before Sandifer syndrome was recognized. She also had a hiatal hernia contributing to her reflux.14PubMed. A female adult with Sandifer’s syndrome and hiatal hernia misdiagnosed as epilepsy with focal seizures These adult cases carry the same lesson as the pediatric ones: if episodic dystonic posturing does not respond to seizure medications, the gastrointestinal tract deserves a closer look.
It is worth noting that adult cases may be even more underdiagnosed than pediatric ones, because the syndrome simply is not on the radar for adult neurologists and gastroenterologists. A movement disorder specialist encountering episodic cervical dystonia in an adult is far more likely to consider primary dystonia or psychogenic movement disorder than to ask about heartburn.
Where the Name Comes From
The syndrome is named after Paul Sandifer, a British neurologist, though it was actually first described in the medical literature by Marcel Kinsbourne in 1962. Kinsbourne documented children with upper gastrointestinal disorders who exhibited distinctive neurological posturing, and he credited Sandifer for drawing his attention to the association.15Asploro Journal of Pediatrics and Child Health. Sandifer Syndrome The eponym stuck even though Kinsbourne was the one who put the observation into print. This kind of naming quirk is common in medicine and occasionally causes confusion, but the important thing is that the name has remained stable enough that clinicians searching for the syndrome in databases can find the relevant literature.
What Parents Should Watch For
If your infant or young child has episodes of back arching, neck twisting, or unusual posturing that cluster around feeding times, it is reasonable to bring this to your pediatrician’s attention and specifically ask whether reflux could be involved. Many parents are understandably terrified that these episodes represent seizures, and that concern is valid and worth investigating. But if an EEG comes back normal and antiseizure medication does not help, pushing for a gastrointestinal workup is a reasonable next step.
Keeping a brief log of when episodes occur relative to feeding can be extremely useful for the clinician. If you notice that the posturing reliably starts within 30 minutes of a meal and does not happen during sleep or at times far removed from eating, that temporal pattern is one of the strongest clues pointing toward Sandifer syndrome rather than a primary neurological cause.
The prognosis for children diagnosed correctly is generally very good. Once the reflux is managed, whether through dietary changes, medication, or surgery, the abnormal posturing resolves. Most children with Sandifer syndrome are neurologically normal underneath the alarming movements, and once the trigger is removed, they develop without lasting effects. The real danger lies not in the syndrome itself but in the delay and misdirection that misdiagnosis creates.