My Child Swallowed a Coin — What Should I Do? Mr Gaurav Kumar | Consultant ENT Surgeon | London & Essex
My Child Swallowed a Coin — What Should I Do? A Parent's Guide to Coins, Batteries and Magnets
Your toddler is playing in the living room.
A moment later, you notice a coin is missing.
Your child coughs briefly, then seems perfectly normal.
Did they swallow it?
Could it be stuck in their throat?
Will it pass naturally?
Or should you take them to hospital?
These are understandable concerns. Young children frequently explore objects by putting them in their mouths. Coins, small toy parts and other household items can occasionally be swallowed.
The reassuring news is that many small, smooth objects pass through the digestive system without causing harm.
However, not every swallowed object is safe. Button batteries, magnets, sharp objects and items stuck in the food pipe require particular attention.
Knowing the difference can help parents respond appropriately.
What happens when a child swallows a coin?
When a child swallows a coin, it may travel from the mouth through the oesophagus, or food pipe, into the stomach.
If the coin reaches the stomach and the child has no concerning symptoms, it will often pass through the intestines naturally.
However, a coin can occasionally become lodged in the oesophagus.
A stuck coin may cause pain, drooling, difficulty swallowing, vomiting or refusal to eat.
Some children have few obvious symptoms.
For this reason, if you suspect your child has swallowed a coin, seek prompt medical assessment rather than assuming it has passed safely.
Is swallowing a coin dangerous?
A single ordinary coin is generally less dangerous than a button battery or multiple strong magnets.
However, its size, position and the child's age matter.
A larger coin may be more likely to become stuck in a young child's oesophagus.
If it obstructs the food pipe, the child may struggle to swallow normally.
Occasionally, an object can enter the airway rather than the food pipe, creating a choking emergency.
Doctors therefore assess the history, symptoms and likely object before deciding whether observation, imaging or removal is needed.
What should I do immediately?
First, check whether your child is breathing normally.
If your child is choking, cannot breathe effectively or becomes blue or unresponsive, call 999 and follow the call handler's instructions.
If your child is breathing normally but you suspect they have swallowed a coin, arrange prompt assessment at an emergency department.
Do not try to make them vomit.
Do not attempt to push the coin down with bread, rice or other food.
Avoid giving food or drink until you have received appropriate medical advice, because an investigation or procedure may be required.
If you know the object's approximate size or have an identical item, tell the medical team.
What if my child seems completely well?
A child may appear comfortable even after swallowing an object.
This does not always establish where the object is located.
For an ordinary coin, a clinician may decide that no further intervention is needed once the object and its position have been assessed.
However, if there is any possibility that the object was a button battery, the situation is much more urgent.
A child who has swallowed a battery may initially have no symptoms despite developing internal injury.
Never wait for symptoms to appear when battery ingestion is suspected.
Why are button batteries so dangerous?
Button batteries are small, round batteries found in remote controls, car keys, hearing aids, toys and other household devices.
If a button battery becomes lodged in the oesophagus, it can generate an electrical current that causes severe chemical injury to surrounding tissue.
Serious damage can begin within approximately two hours.
Complications may include burns, perforation and damage to nearby blood vessels.
Great Ormond Street Hospital advises immediate emergency assessment for suspected button-battery ingestion, even if the child appears well.
If you suspect your child has swallowed a button battery, go to A&E immediately. Call 999 if they have breathing difficulty or are seriously unwell. Do not induce vomiting or delay departure.
How can I tell a coin from a button battery?
Coins and button batteries can look similar, particularly when viewed quickly.
Both may be round, metallic and small enough to fit into a toddler's mouth.
A button battery may have a smooth, shiny surface and a marked positive terminal.
However, appearance alone is not reliable.
If an object has disappeared and you cannot establish whether it was a coin or battery, tell the emergency team about that uncertainty.
On X-ray, clinicians can often distinguish a button battery from a coin by characteristic features.
Do not attempt to make that distinction at home.
What about swallowed magnets?
Magnets create a different type of danger.
Two or more strong magnets can attract each other through separate loops of intestine.
This can trap bowel tissue between them, potentially causing pressure injury, perforation or obstruction.
A magnet may also attract another swallowed metal object.
Children who have swallowed magnets need urgent hospital assessment, even if they appear well.
The risk is particularly concerning with small, powerful magnetic balls used in some toys and novelty products.
Do not wait for abdominal pain or vomiting before seeking help.
How do doctors check a swallowed coin?
The medical team will ask what happened, when the object was swallowed and whether the child has symptoms.
They may examine the mouth, throat, breathing and abdomen.
They may use an X-ray to locate a metallic object and distinguish a coin from a button battery.
Some departments use a handheld metal detector for selected swallowed metallic objects.
Not every child requires imaging, but the decision depends on the history and clinical assessment.
Leeds Teaching Hospitals' guidance, reviewed in June 2025, explains that investigations are selected according to the object and the child's presentation.
What if the coin is stuck in the oesophagus?
A coin lodged in the food pipe may need to be removed.
The timing depends on the child's symptoms and the object's location.
If the child cannot swallow saliva, has respiratory symptoms or shows signs of significant obstruction, urgent intervention may be necessary.
Removal is usually performed in hospital using an endoscope and appropriate instruments.
The child may require a general anaesthetic.
The team will explain the procedure, risks and expected recovery.
Parents should not attempt to dislodge a stuck coin themselves.
Will my child need an operation?
Most children who swallow a small, smooth object do not need surgery.
If a coin has reached the stomach and the child is well, observation may be appropriate.
If the coin remains in the oesophagus, endoscopic removal may be required.
This is not the same as an open operation.
An endoscope allows clinicians to reach the object through the mouth without making a skin incision.
The precise technique depends on the object's position and the child's clinical circumstances.
How long does a swallowed coin take to pass?
Once a coin has reached the stomach, many pass naturally over the following days.
NHS Healthier Together information notes that swallowed objects often pass within approximately three to five days, although timing varies.
Some objects take longer.
Parents should follow the discharge instructions given by the treating team.
Routine searches of stools are generally not recommended.
If your child develops abdominal pain, persistent vomiting, difficulty swallowing, blood in vomit or stools, or becomes unwell, seek medical reassessment.
What if the swallowed object was plastic?
Small, smooth plastic objects may pass without causing injury.
However, some plastic objects do not show clearly on an X-ray.
This means a normal X-ray cannot always exclude a swallowed plastic foreign body.
The object's size, shape and symptoms matter.
A large, sharp or irregularly shaped plastic item may still require urgent assessment.
If your child has persistent swallowing difficulty or other concerning symptoms, do not assume the object is harmless simply because it is plastic.
Could a swallowed object enter the airway?
Yes.
An inhaled object enters the windpipe or bronchi rather than the oesophagus.
This may cause sudden choking, coughing, wheezing or breathing difficulty.
Sometimes the initial coughing settles, even though the object remains in the airway.
Persistent cough, one-sided wheeze or unexplained breathing symptoms after a choking episode require urgent medical assessment.
An airway foreign body may need bronchoscopy for diagnosis and removal.
A child who cannot breathe effectively needs immediate emergency help.
Can a child swallow an object without symptoms?
Yes.
Some children swallow small objects without a parent witnessing the event.
Others may initially cough or gag and then seem well.
This is especially important with button batteries, magnets and certain sharp objects.
Absence of symptoms does not make these objects safe.
If you discover an open battery compartment or missing magnets and suspect ingestion, seek emergency assessment.
For less hazardous objects, the medical team will determine whether further investigation is necessary.
What are the warning signs after swallowing an object?
Important symptoms include persistent drooling, difficulty swallowing, refusal to eat or drink, repeated vomiting, chest or neck pain, abdominal pain and unusual breathing noises.
Blood in vomit or stools is also concerning.
Seek urgent medical assessment if these develop.
Call 999 for severe breathing difficulty, ineffective coughing with choking, blue or grey colour change, collapse or reduced responsiveness.
Suspected button batteries, magnets and sharp objects require emergency assessment even before symptoms develop.
How can parents prevent accidental swallowing?
Young children are naturally curious and may put unfamiliar objects in their mouths.
Store coins, batteries, magnets, jewellery and small toy parts out of reach.
Check that battery compartments are securely fastened.
Be particularly cautious with devices that use button batteries, including musical cards, remote controls, and car keys.
Avoid toys containing accessible powerful magnets.
Choose age-appropriate toys and regularly inspect them for loose parts.
Remind older siblings not to leave small items where younger children can reach them.
Prevention is especially important because serious battery and magnet injuries can occur quickly.
When should an ENT specialist become involved?
An ENT surgeon may be involved when an object is lodged in the throat, upper oesophagus or airway, depending on local hospital arrangements.
Other teams, including paediatric emergency medicine, gastroenterology and paediatric surgery, may also be involved.
The choice depends on the object's position, the child's age and the available specialist service.
A suspected swallowed foreign body is primarily an acute hospital problem rather than something to wait for a routine private ENT appointment.
After the emergency has been managed, persistent swallowing or throat symptoms may occasionally need further assessment.
Paediatric ENT care in London and Essex
Mr Gaurav Kumar, Consultant ENT Surgeon, assesses children with swallowing, throat, airway and related paediatric ENT concerns across London, East London, Romford, Ilford, Redbridge, Woodford, Brentwood, Chelmsford and surrounding Essex areas.
If a child has swallowed a potentially dangerous object, emergency hospital assessment should take priority.
Where persistent ENT symptoms remain after appropriate acute care, further specialist evaluation may be considered.
The aim is to identify the problem accurately and ensure children receive the right assessment at the right time.
The key message for parents
Many small, smooth swallowed objects pass naturally.
However, a coin may become stuck in the food pipe, while button batteries and magnets can cause serious internal injury.
If your child may have swallowed a coin, seek prompt medical assessment. If you suspect a button battery, magnet, or sharp object, go to A&E immediately, even if your child appears well.
This article is for general educational purposes and does not replace individual medical advice.
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