Biliary Dyskinesia (Functional Gallbladder Disorder)

Biliary dyskinesia is a functional gallbladder disorder — meaning the gallbladder causes pain because of how it works, not because of a visible structural problem like a stone (Richmond, JAMA Surgery, 2024). It is defined by the combination of three findings: biliary-type pain, a sonographically normal gallbladder (no gallstones), and a reduced gallbladder ejection fraction (GBEF) on a cholecystokinin-cholescintigraphy (CCK-HIDA) scan (Richmond, JAMA Surgery, 2024).

The diagnosis is framed by the Rome IV criteria for functional gallbladder disorder, which require criteria for biliary pain to be met plus the absence of gallstones, with a low ejection fraction serving as a supportive — not mandatory — feature (Richmond, JAMA Surgery, 2024). It is a genuinely controversial condition: much of the evidence is retrospective, definitions of both diagnosis and successful outcome have not been standardized, and symptom relief after surgery is less reliable than with stone-related biliary pain (Richmond, JAMA Surgery, 2024). For this reason, the value of the condition page — and of good care — lies in careful patient selection, because the patients most likely to benefit are those with typical symptoms and a low GBEF (Richmond, JAMA Surgery, 2024).

In the United States, laparoscopic cholecystectomy is the most common treatment for biliary dyskinesia, and it is now the most common indication for gallbladder removal in children and adolescents, accounting for 25%–58% of pediatric gallbladder surgeries (Richmond, JAMA Surgery, 2024; Goldman, Pediatrics in Review, 2020).

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Biliary dyskinesia results from a motility (movement) problem of the gallbladder, rather than an obstruction or stone (Agresta et al., Langenbeck's Archives of Surgery, 2015):

• Abnormal gallbladder emptying — the gallbladder contracts poorly or in an uncoordinated way in response to the hormone cholecystokinin, leading to inadequate emptying and a low ejection fraction (Goldman, Pediatrics in Review, 2020).

• Increased intraluminal pressure — uncoordinated contractions against a functionally resistant outlet are thought to raise pressure inside the gallbladder and produce pain (Goldman, Pediatrics in Review, 2020).

• Underlying microscopic gallbladder disease — many gallbladders removed for biliary dyskinesia show chronic cholecystitis or cholesterolosis on pathology, suggesting a low-grade inflammatory or cholesterol-related process in a subset of patients (Whitaker et al., The American Surgeon, 2022).

• Hyperkinetic (hyperdynamic) variant — a less common form in which an abnormally high ejection fraction is associated with the same type of pain; the mechanism is less well understood (Richmond, JAMA Surgery, 2024).

The precise cause is not fully understood, which is part of why the condition remains controversial (Richmond, JAMA Surgery, 2024).

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Because biliary dyskinesia is a functional disorder, well-established risk factors are limited; recognized associations include (Richmond, JAMA Surgery, 2024; Goldman, Pediatrics in Review, 2020):

• Female sex — negative (stone-free) ultrasound in patients with biliary pain is more common in women (20.7%) than men (7.6%)

• Adolescence and childhood — a rising indication for cholecystectomy in the pediatric population

• Functional GI overlap — association with other functional disorders such as irritable bowel syndrome (as seen across the functional biliary/sphincter spectrum)

• Chronic acalculous biliary symptoms — recurrent biliary-type pain without stones

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Normally, when fat enters the small intestine, the hormone cholecystokinin signals the gallbladder to contract and release stored bile into the intestine to aid digestion (Goldman, Pediatrics in Review, 2020). In biliary dyskinesia, this coordinated squeeze is impaired — the gallbladder empties incompletely or in an uncoordinated fashion (Goldman, Pediatrics in Review, 2020).

This is thought to raise pressure within the gallbladder lumen and produce the characteristic right-upper-quadrant or epigastric pain, often after meals (Goldman, Pediatrics in Review, 2020). Crucially — and unlike gallstone disease — biliary dyskinesia is a pain-and-quality-of-life problem only: it does not obstruct the bile ducts and does not progress to the dangerous complications of stone disease (Elmunzer et al., Gastroenterology, 2026).

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The most important point for patients is what biliary dyskinesia does not cause (Elmunzer et al., Gastroenterology, 2026):

• No risk of the serious complications of gallstone disease — unlike stones, biliary dyskinesia does not cause cholecystitis, choledocholithiasis, cholangitis, or gallstone pancreatitis; its only manifestations are symptom-related (Elmunzer et al., Gastroenterology, 2026).

• Spontaneous resolution is common — symptoms suggestive of functional gallbladder disorder may resolve on their own in up to 50% of cases, which is why early surgery is discouraged (Elmunzer et al., Gastroenterology, 2026).

• Persistent symptoms after surgery — the principal "complication" is that some patients, particularly those with atypical symptoms, remain symptomatic even after gallbladder removal (Richmond, JAMA Surgery, 2024).

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The hallmark is biliary pain meeting the Rome IV criteria, in the absence of gallstones (Richmond, JAMA Surgery, 2024). Episodes must be located in the epigastrium and/or right upper quadrant and have all of the following features:

• Pain that builds to a steady level and lasts 30 minutes or longer (Richmond, JAMA Surgery, 2024)

• Intermittent episodes occurring at different intervals (not daily) (Richmond, JAMA Surgery, 2024)

• Severe enough to interrupt daily activities or prompt an emergency department visit (Richmond, JAMA Surgery, 2024)

• Not significantly relieved by bowel movements, posture change, or acid suppression (Richmond, JAMA Surgery, 2024)

Supportive features include nausea and vomiting, radiation of the pain to the back or right shoulder blade, and waking from sleep because of the pain (Richmond, JAMA Surgery, 2024). "Typical" symptoms that follow this pattern predict a better response to surgery, whereas "atypical" symptoms predict a poorer response (Richmond, JAMA Surgery, 2024).

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Diagnosis is one of exclusion plus supportive testing, following the Rome IV framework (Richmond, JAMA Surgery, 2024):

• Confirm biliary-type pain — the pain must meet the Rome IV criteria for biliary pain (Richmond, JAMA Surgery, 2024).

• Transabdominal ultrasound — must show a normal gallbladder with no stones or sludge; this is required for the diagnosis (Richmond, JAMA Surgery, 2024).

• CCK-HIDA scan (cholescintigraphy) with gallbladder ejection fraction — a technetium-99m tracer is excreted into the biliary system, synthetic cholecystokinin (sincalide) is infused, and the ejection fraction is calculated; a GBEF below roughly 35%–40% is considered abnormal/low, supporting the diagnosis (Richmond, JAMA Surgery, 2024; Goldman, Pediatrics in Review, 2020). A 60-minute sincalide infusion gives the most consistent and reproducible result; a sincalide-stimulated GBEF >38% is within normal range (ACR–ACNM–SNMMI–SPR Practice Parameter, 2021).

• Normal laboratory studies — liver enzymes, conjugated bilirubin, and amylase/lipase should be normal, helping exclude structural or obstructive disease (Richmond, JAMA Surgery, 2024).

• Rule out microlithiasis and other mimics — upper endoscopy/endoscopic ultrasound may be used to exclude microlithiasis (Agresta et al., Langenbeck's Archives of Surgery, 2015).

An important caveat is that the GBEF is not by itself diagnostic of disease — abnormal values can occur in people with no symptoms, so the result must always be interpreted alongside the clinical picture (Richmond, JAMA Surgery, 2024).

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Biliary-type pain with a stone-free gallbladder must be distinguished from (Richmond, JAMA Surgery, 2024; Cho Naing et al., Cochrane Database, 2024):

• Gallstones/biliary colic and microlithiasis (stones missed on initial ultrasound)

• Sphincter of Oddi dysfunction (functional biliary-type pain, often post-cholecystectomy)

• Peptic ulcer disease and gastritis

• Gastroesophageal reflux disease (GERD)

• Functional dyspepsia and irritable bowel syndrome

• Chronic pancreatitis

• Hyperkinetic (high ejection fraction) gallbladder

• Hepatic or right-sided musculoskeletal/abdominal wall pain

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Because up to half of cases improve on their own, initial management often emphasizes time and conservative measures before surgery (Elmunzer et al., Gastroenterology, 2026):

• A period of watchful waiting (often 3–6 months) is a prudent first step, allowing spontaneous resolution and reducing unnecessary operations (Elmunzer et al., Gastroenterology, 2026).

• Dietary moderation — reducing large, fatty meals may lessen post-meal pain episodes (general supportive measure).

• A trial of non-surgical therapy — for example, a neuromodulator such as low-dose amitriptyline has been used as an active non-operative treatment arm in trials of this condition (Richmond, JAMA Surgery, 2024).

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Management ranges from observation to surgery, guided above all by how typical the symptoms are (Richmond, JAMA Surgery, 2024):

• Watchful waiting / non-operative treatment — appropriate first-line for many patients given the high rate of spontaneous resolution; early surgery is unwarranted because biliary dyskinesia does not cause dangerous complications (Elmunzer et al., Gastroenterology, 2026).

• Laparoscopic cholecystectomy — the definitive treatment in well-selected patients — removal of the gallbladder is the most common and most effective treatment when patients are chosen carefully (Richmond, JAMA Surgery, 2024). The best candidates are those with typical Rome IV biliary pain and an abnormally low GBEF, among whom roughly 81%–94% achieve symptom relief (Richmond, JAMA Surgery, 2024). A meta-analysis found cholecystectomy relieved symptoms in about 98% of treated patients versus 32% of untreated patients, though the quality of evidence is limited (Agresta et al., Langenbeck's Archives of Surgery, 2015).

• Avoiding surgery in poor candidates — patients with atypical symptoms respond poorly to cholecystectomy regardless of GBEF and generally should not be offered surgery; typical symptoms with a normal GBEF also predict a weaker response (Richmond, JAMA Surgery, 2024).

• Cholecystectomy for the hyperkinetic variant — emerging case series suggest that patients with typical pain and an abnormally high ejection fraction may also benefit, with one of the largest cohorts reporting ~92% partial or complete symptom resolution after surgery, though evidence is still limited (Whitaker et al., The American Surgeon, 2022; Elmunzer et al., Gastroenterology, 2026).

The overall quality of evidence remains modest, and shared decision-making — a clear explanation of the pros, cons, and the fact that relief is not guaranteed — is essential before proceeding to surgery (Agresta et al., Langenbeck's Archives of Surgery, 2015).

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Anyone with recurrent right-upper-quadrant or epigastric pain that lasts 30 minutes or longer, disrupts daily activities, and is not relieved by antacids should be evaluated, particularly when an ultrasound has already shown no gallstones (Richmond, JAMA Surgery, 2024). Because the pain pattern overlaps with gallstone disease, ulcers, and reflux, a proper work-up is needed to make the diagnosis and exclude more dangerous causes (Richmond, JAMA Surgery, 2024).

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Seek prompt medical evaluation for (Richmond, JAMA Surgery, 2024; Elmunzer et al., Gastroenterology, 2026):

• Repeated episodes of typical biliary pain that interfere with work, sleep, or daily life

• Pain associated with nausea and vomiting or radiating to the back or right shoulder blade

• Persistent symptoms despite dietary changes and acid-suppression trials

• Symptoms that continue after a reasonable period of watchful waiting, which may indicate candidacy for surgery

Seek urgent care if pain is accompanied by fever, jaundice (yellowing of the skin or eyes), or persistent vomiting, since these suggest a different, potentially serious biliary problem rather than simple biliary dyskinesia (Richmond, JAMA Surgery, 2024).

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For well-selected patients who undergo laparoscopic cholecystectomy, long-term symptom relief and quality-of-life improvement are achieved in the large majority, with a prospective cohort reporting 84%–93% improvement in pain and quality of life after surgery in patients with typical biliary pain (Elmunzer et al., Gastroenterology, 2026). People can live completely normally without a gallbladder, since the liver continues to produce the bile needed for digestion (general physiology). For patients who do not improve after surgery, the ongoing symptoms usually reflect either atypical pain that was never truly gallbladder-derived or an overlapping functional disorder such as sphincter of Oddi dysfunction, and these require continued, cause-directed management (Cho Naing et al., Cochrane Database, 2024). Setting realistic expectations before surgery is therefore central to long-term satisfaction (Richmond, JAMA Surgery, 2024).

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The outlook is generally favorable but variable, and it depends heavily on patient selection (Richmond, JAMA Surgery, 2024). Many patients improve without any surgery at all, with spontaneous resolution in up to half of cases (Elmunzer et al., Gastroenterology, 2026). Among patients selected for surgery on the basis of typical symptoms plus a low ejection fraction, complete pain resolution occurs in roughly 81%–94% (Richmond, JAMA Surgery, 2024). Those with atypical symptoms, or typical symptoms but a normal ejection fraction, have meaningfully lower success rates (around 69%–70%) and may continue to have pain after surgery (Richmond, JAMA Surgery, 2024). Importantly, because biliary dyskinesia does not cause the dangerous complications of gallstones, the condition itself carries an excellent overall prognosis even when symptoms persist (Elmunzer et al., Gastroenterology, 2026).

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Biliary dyskinesia is one of the most nuanced and controversial diagnoses in biliary surgery, where outcomes depend almost entirely on correct patient selection rather than on the operation itself (Richmond, JAMA Surgery, 2024). As a board-certified surgeon with advanced expertise in minimally invasive and robotic foregut and biliary surgery, Dr. Nestor de la Cruz-Muñoz, MD, FACS, DABOM applies the Rome IV criteria rigorously — confirming genuinely typical biliary pain, a stone-free gallbladder on ultrasound, and an abnormal gallbladder ejection fraction before recommending surgery (Richmond, JAMA Surgery, 2024). He favors an evidence-based, stepwise approach: a trial of watchful waiting where appropriate, honest counseling that symptom relief is highly likely in well-selected patients but not guaranteed, and avoidance of cholecystectomy in patients with atypical symptoms who are unlikely to benefit (Elmunzer et al., Gastroenterology, 2026; Richmond, JAMA Surgery, 2024). For patients who are good candidates, he performs laparoscopic (or robotic) cholecystectomy using safe-cholecystectomy principles, delivering the high rates of lasting symptom relief documented in the literature (Richmond, JAMA Surgery, 2024).

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