Oesophageal spasm and motility disorders

01OverviewDefinition, clinical context and the essential points that orientate the chapter.

Swallowing depends on coordinated peristalsis, normal junction relaxation and an unobstructed lumen. High-resolution manometry measures these components and describes disorders according to the contemporary Chicago classification. Major patterns include achalasia, distal oesophageal spasm, hypercontractile oesophagus, absent contractility and clinically relevant oesophagogastric junction outflow obstruction. Ineffective motility is a lesser disorder and is common in reflux or systemic illness. Classification thresholds and required supportive tests evolve, so reports should be interpreted by an accredited physiology service rather than copied into a permanent diagnosis without context.

Chest discomfort can arise from vigorous contraction, oesophageal distension, reflux hypersensitivity or central pain processing. The same manometric finding may be symptomatic in one person and incidental in another. Conversely, severe symptoms can occur with normal conventional pressure metrics. Cardiac disease, malignancy, peptic narrowing, a hiatus hernia, EoE and opioid-related dysfunction must be considered. A careful history distinguishes dysphagia, odynophagia, impaction, regurgitation and pain, but no single symptom safely assigns the mechanism.

Treatment starts with the most defensible contributor: relieve a mechanical obstruction, treat EoE or documented reflux, review opioids and provide safe eating strategies. Selected people with convincing spastic disease may trial an off-label smooth-muscle relaxant, pain-modulating therapy or endoscopic intervention. These approaches can cause hypotension, headache, reflux or adverse neuropsychiatric effects and have inconsistent efficacy. Long myotomy or POEM is reserved for severe objective outflow or spastic disease reviewed at an expert multidisciplinary meeting, with explicit discussion that weakening the junction may exchange dysphagia for reflux.

Key points

Oesophageal chest pain and dysphagia have structural, inflammatory, reflux, cardiac and functional causes; motility testing follows appropriate exclusion rather than replacing it.
High-resolution manometry classifies motor patterns using pressure topography, but a technically named pattern is clinically meaningful only when symptoms and supportive evidence align.
Distal oesophageal spasm features premature contractions with preserved oesophagogastric junction relaxation, whereas type III achalasia combines premature activity with impaired relaxation.
Hypercontractile oesophagus has excessive contractile vigour during otherwise propagated swallows and should not be diagnosed from one forceful contraction.
Oesophagogastric junction outflow obstruction is a manometric observation, not automatically a disease; mechanical causes, artefact and opioid effects must be considered.
Absent contractility and ineffective oesophageal motility can accompany systemic sclerosis, reflux or medicines and often require supportive reflux and swallowing care.
Endoscopy with suitable biopsies excludes cancer, stricture and eosinophilic oesophagitis before dysphagia is attributed to spasm.
Timed barium swallow, solid test meal, rapid drink challenge or functional lumen imaging may provide supportive evidence when standard swallows are equivocal.
PPIs help coexisting proven reflux but do not directly normalise primary spastic contractions; repeated empirical escalation can distract from the actual phenotype.
Smooth-muscle relaxants, neuromodulation and myotomy have variable evidence and adverse effects, so treatment belongs in a specialist, shared-decision pathway.

02AetiologyUnderlying causes, associations and risk factors, with why each one matters.

Primary enteric neural dysfunction

Impaired inhibitory timing within the myenteric plexus can produce premature or excessively vigorous contractions without a structural obstruction.

Reflux and medicine effects

Acid exposure and opioids can provoke or mimic abnormal motor patterns, so reversible drivers are reviewed before assigning a primary disorder.

Systemic neuromuscular disease

Scleroderma and other connective-tissue or neurological disorders more often weaken peristalsis but can present with mixed dysphagia and chest symptoms.

03PathophysiologyThe causal sequence from the underlying abnormality to symptoms and harm.

1
Disordered inhibitory timing
Premature contractions occur when swallow-induced inhibition is shortened, while junction relaxation remains preserved in distal oesophageal spasm.
2
Excessive or failed contraction
Hypercontractile swallows create abnormal vigour, whereas ineffective motility fails to clear a bolus and refluxate after swallowing.
3
Sensory-motor interaction
Oesophageal distension and contraction activate visceral afferents, producing pain whose severity may not correlate closely with manometric abnormality.

04Clinical features and red flagsSymptoms, examination findings, patterns of presentation and time-critical warnings.

Intermittent motor dysphagia

Liquids and solids stick unpredictably, sometimes triggered by very hot or cold drinks, while symptom-free intervals and variable meal tolerance make a fixed narrowing less likely.

Non-cardiac chest pain phenotypeRed flag

Squeezing retrosternal pain may occur with swallowing or at rest, but cardiac and aortic emergencies require appropriate exclusion before oesophageal spasm is considered.

Structural alarm patternRed flag

Progressively worsening solid-food dysphagia, weight loss, anaemia, bleeding or persistent vomiting points away from a benign motor label and toward urgent endoscopy or cancer assessment.

Connective-tissue association

Severe reflux, weak swallowing and Raynaud phenomenon or skin changes can accompany absent contractility in systemic sclerosis and need coordinated rheumatology and gastroenterology care.

Medicine-related dysfunction

Regular opioid exposure can impair junction relaxation and produce spastic or outflow-obstruction patterns; anticholinergic and other medicines may worsen clearance or dryness.

Food-bolus obstructionRed flag

Sudden inability to swallow solids, fluids or saliva requires urgent endoscopic assessment and investigation for a ring, stricture, EoE or major motor disorder.

05InvestigationsWhat to request, why it matters and how to interpret it.

Investigation order

Read from the initial assessment onwards. Tests may run in parallel in urgent care; first-line, preferred, confirmatory, definitive and gold-standard labels appear only when the chapter explicitly states them.

01
Electrocardiogram and acute cardiac assessmentFirst step
Why
Exclude myocardial ischaemia or another cardiovascular emergency during acute chest pain.
Interpretation and limitations
Use the current acute chest-pain pathway, serial biomarkers and imaging according to clinical risk. Relief with nitrate is not specific for an oesophageal cause.
02
Upper gastrointestinal endoscopy with biopsies
Why
Exclude cancer, mucosal inflammation, eosinophilic disease and fixed narrowing.
Interpretation and limitations
Biopsy suspected EoE even if mucosa is subtle and investigate visible lesions. A normal lumen permits physiology testing but does not itself prove a primary motor disorder.
03
High-resolution oesophageal manometry
Why
Measure peristaltic timing, contractile vigour and junction relaxation.
Interpretation and limitations
Apply the current Chicago hierarchy and technical quality standards. Premature contractions suggest spasm; excessive vigour suggests hypercontractility; an elevated relaxation metric requires supportive assessment for true outflow obstruction.
04
Timed barium oesophagram
Why
Provide anatomical and functional evidence of delayed clearance or junctional hold-up.
Interpretation and limitations
Persistent contrast column or tablet retention supports clinically important obstruction, while a corkscrew pattern may occur in spasm but is neither required nor sufficiently specific alone.
05
Provocative manometry protocol
Why
Expose clinically relevant dysfunction not seen during small water swallows.
Interpretation and limitations
Rapid drinking, multiple rapid swallows or a standardised solid meal can reveal impaired reserve or symptomatic outflow obstruction; the accredited laboratory selects and interprets the challenge.
06
Ambulatory pH-impedance monitoring
Why
Determine whether persistent chest pain or regurgitation tracks with acid or non-acid reflux.
Interpretation and limitations
Test on or off therapy according to whether reflux is already proven. Normal exposure with negative association redirects attention toward hypersensitivity or functional pain rather than more acid suppression.
07
Cross-sectional imaging or endoscopic ultrasonography
Why
Investigate suspected secondary outflow obstruction or infiltrating disease.
Interpretation and limitations
Use when endoscopic resistance, weight loss, older short-onset symptoms or discordant physiology raises pseudoachalasia concern; normal initial imaging does not override a concerning trajectory.

06Differential diagnosisRealistic alternatives and the features that help distinguish them.

Acute coronary syndrome

Exertional or prolonged chest pressure with cardiovascular risk requires cardiac assessment before any manometric label is accepted.

Achalasia

Impaired oesophagogastric junction relaxation with absent or spastic peristalsis defines achalasia rather than isolated spasm with preserved relaxation.

Structural or inflammatory disease

Cancer, peptic stricture and eosinophilic oesophagitis require endoscopy and biopsies because motility testing cannot exclude mucosal or mechanical pathology.

07ManagementImmediate care, first-line treatment, alternatives and escalation.

01Diagnostic sequenceMove from danger to mechanismFirst stepA patient reports unexplained dysphagia or recurrent oesophageal-type chest pain.

1Triage acute coronary, aortic, obstructive and perforation features first, and use urgent pathways rather than elective physiology when present.
2Review symptom consistency, reflux, impaction, weight, systemic disease and medicines, especially prescribed or non-prescribed opioids.
3Undertake endoscopy with appropriate oesophageal biopsies before attributing dysphagia to a motor diagnosis.
4Perform high-resolution manometry through an accredited service and add timed barium, provocative swallows or reflux monitoring when needed to connect the pattern to symptoms.

02Spastic diseaseUse proportionate symptom-led therapyDistal spasm or hypercontractile oesophagus is objectively supported and important mimics have been excluded.

1Explain the benign motor finding, avoid personally reproducible temperature or eating triggers and provide small-bite, slow-meal advice without creating unnecessary dietary restriction.
2Treat objectively supported reflux, review opioid reduction safely with the prescriber and consider psychological or pain-service support where hypervigilance amplifies symptoms.
3Offer a time-limited specialist trial of a smooth-muscle relaxant or neuromodulator only after reviewing blood pressure, interactions, driving, falls and adverse effects.
4For disabling refractory symptoms with concordant spastic physiology, discuss botulinum toxin, dilation or tailored myotomy at a tertiary meeting, acknowledging limited evidence and post-procedure reflux.

03Outflow obstructionConfirm relevance before disrupting the junctionDefinitiveManometry reports oesophagogastric junction outflow obstruction without definitive achalasia.

1Check catheter artefact, body position, hiatus anatomy and technical quality, then review opioids and structural explanations.
2Obtain endoscopy and supportive emptying evidence with timed barium or an expert functional lumen assessment rather than treating an isolated pressure threshold.
3EscalationObserve mild non-progressive symptoms or remove a reversible cause, while escalating progressive dysphagia, weight loss or convincing retention.
4Reserve sphincter-disrupting treatment for clinically important confirmed obstruction after specialist review because unnecessary myotomy can create permanent reflux.

04HypomotilityProtect clearance and nutritionAbsent contractility or severe ineffective motility accompanies dysphagia or reflux.

1Search for systemic sclerosis, diabetes, reflux injury, medicines and prior surgery while assessing weight, aspiration and oral intake.
2Treat proven acid exposure, review aggravating medicines and teach upright, small-bolus eating with fluid chasers when safe.
3Involve dietetics and speech and language therapy when nutrition, oropharyngeal coordination or aspiration is impaired.
4Avoid antireflux surgery or other irreversible intervention without specialist physiology review because absent peristalsis changes postoperative dysphagia risk.

Key medicines and prescribing safety3 treatments · regimens, roles and cautions

Treats coexisting acid reflux that may trigger pain or complicate weak clearance; it is not a primary treatment for manometric spasm.

Proton pump inhibitor for documented reflux

Use a licensed full-dose PPI regimen from the current BNF for an adequate initial course, then step down or continue according to objective reflux, mucosal injury and symptom benefit.

Reassess adherence and indication before escalation. Dysphagia, weight loss or non-response requires structural and physiological review, not repeated empirical dose increases.

May reduce contraction amplitude or transiently ease swallowing in selected distal spasm or hypercontractile disease when symptoms and physiology agree.

Smooth-muscle relaxant such as a nitrate or calcium-channel blocker

If a physiology specialist recommends an off-label trial, use the exact current BNF and local protocol for the chosen product, beginning cautiously and reviewing benefit promptly; no regimen applies universally across spastic phenotypes.

Evidence is limited and headache, flushing, hypotension, syncope and oedema can outweigh benefit. Check cardiovascular disease, interacting antihypertensives and absolute nitrate interaction with phosphodiesterase-5 inhibitors; give falls and driving advice.

Targets visceral hypersensitivity when cardiac disease, structural pathology and clinically relevant reflux or major motility obstruction have been addressed.

Pain-modulating medicine

A gastroenterology or pain service selects a low-dose off-label neuromodulator using the current BNF, comorbidity and local functional chest-pain pathway, with slow titration and a defined review point.

Discuss sedation, anticholinergic effects, QT risk, mood change, overdose toxicity and withdrawal according to the selected agent. This is shared symptom management, not evidence that pain is imagined.

08ComplicationsImportant consequences, why they occur and why they matter clinically.

Weight loss and food avoidance

Fear of dysphagia or pain can restrict textures and meal size, causing nutritional decline despite no fixed obstruction.

Reflux and aspiration

Poor clearance allows retained saliva or refluxate to reach the pharynx, causing cough, nocturnal symptoms and occasional aspiration.

Chronic pain and treatment burden

Persistent non-cardiac chest pain can drive repeated emergency attendance and invasive treatment unless physiology and symptom correlation are interpreted carefully.

09Monitoring and follow-upTreatment response, safety checks and longer-term review.

Track dysphagia separately for liquids and solids, chest-pain frequency, impaction, regurgitation, weight and the effect on meals before and after each intervention.
During any vasodilator trial measure sitting and standing blood pressure and ask about headache, dizziness, falls, oedema and interacting medicines.
Review opioid exposure with the responsible prescriber and document whether physiology or symptoms change after a safe reduction; abrupt cessation can cause harm.
Repeat endoscopy or imaging promptly when symptoms progress, weight falls or anaemia develops, even if prior manometry carried a benign-sounding label.
After myotomy or POEM monitor reflux symptoms and mucosal injury and use objective reflux testing where required by the specialist pathway.
For hypomotility, reassess nutrition, aspiration and lung complications and coordinate systemic-disease follow-up rather than focusing solely on a manometry trace.

10Special situationsVariants, exceptions and circumstances that change the usual approach.

A pattern needs a patient

Manometry describes pressure behaviour; the diagnosis becomes actionable only when symptoms, test quality and supportive evidence make the finding clinically relevant.

Nitrate response is non-specific

Both angina and oesophageal spasm may ease after nitrate, so relief never substitutes for cardiac risk assessment.

EGJOO is a starting point

Junction outflow obstruction can reflect artefact, a hernia, opioid use or structural disease and should not trigger automatic myotomy.

Weak motility alters surgery

Absent contractility and limited reserve affect clearance after fundoplication; physiology should inform any irreversible antireflux plan.

Pain can remain after pressure normalises

Visceral hypersensitivity and threat learning may sustain symptoms, making explanation and multidisciplinary pain care biologically coherent rather than dismissive.

11Common pitfallsFrequent interpretation and management errors.

01
Calling squeezing chest pain oesophageal spasm before completing an appropriate acute cardiac assessment.
02
Treating an isolated elevated manometric relaxation pressure as definite obstructive disease without supportive testing.
03
Skipping biopsies in a normal-looking oesophagus and missing eosinophilic oesophagitis.
04
Using repeated PPI escalation for a primary motor disorder without confirming reflux or adherence.
05
Prescribing a nitrate without checking blood pressure, falls risk and phosphodiesterase-5 inhibitor use.
06
Offering irreversible junction disruption for mild symptoms or incidental physiology without tertiary review.