
It is not uncommon for newborns to throw up while sleeping, and it is usually not a cause for concern. The sleep position recommended by the American Academy of Pediatrics (AAP) is for babies to lie flat on their backs. However, when a baby lies down in this position, the stomach is higher than the oesophagus, making it easier for milk or clear liquid to come back up, especially if the baby has reflux. In addition, the valve between the stomach and oesophagus relaxes more while the baby is sleeping, which can lead to more frequent spitting up or vomiting at night. While newborn vomiting is often harmless, parents should be vigilant for signs of more serious conditions, such as pyloric stenosis, a rare condition that requires medical attention.
| Characteristics | Values |
|---|---|
| Normal | Newborn and infant vomiting is common and usually not a cause for concern |
| Safe sleeping position | Placing a baby on their back to sleep is recommended by the American Academy of Pediatrics and provides airway protection |
| Reasons | The position of the stomach being higher than the oesophagus when lying down flat on the back, the valve between the stomach and oesophagus relaxing more during sleep, and reflux |
| Reflux | A normal condition in babies as the muscular valve at the end of the food pipe is still developing |
| Serious causes | Pyloric stenosis, a rare condition causing projectile vomiting, and viral gastrointestinal infections, such as rotaviruses, noroviruses, enteroviruses, or adenoviruses |
| Treatment | Surgery for pyloric stenosis |
| Prevention | Avoiding solids to reduce the risk of choking and putting infants to sleep on their back |
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What You'll Learn

Baby sleeping positions
It is quite common for newborns to throw up while sleeping. This could be due to various reasons, such as coughing, reflux, or even a kidney infection. If vomiting persists for more than 24 hours, it is recommended to consult a healthcare professional to rule out any serious underlying causes. To minimize the risk of choking, it is advised to always place newborns on their back while sleeping.
Now, let's discuss the ideal sleeping positions for babies:
Back Sleeping
The American Academy of Pediatrics (AAP) and the American Association of Pediatrics recommend that healthy infants be placed on their backs to sleep. This position is considered the safest for babies under one year old and has been proven to reduce the risk of Sudden Infant Death Syndrome (SIDS). The Back To Sleep campaign, initiated by the American Association of Pediatrics, effectively communicated this message to parents, resulting in a significant decline in SIDS-related deaths.
Side and Stomach Sleeping
While some babies prefer to sleep on their sides or stomachs, these positions are not recommended for newborns. Sleeping on their side can pose a risk of suffocation, especially if they are under four months old and cannot lift their heads yet. However, if your baby is over three months old and can roll over on their own, you don't need to move them back to their backs.
Transition to Other Positions
After your baby reaches their first birthday, they can explore other sleep positions safely. By this age, they will have developed the necessary muscle strength to squirm, twist, kick, crawl, and roll over. If they feel uncomfortable or have trouble breathing, they will be able to adjust their position accordingly.
Room-Sharing and Safe Sleep Environment
The American Academy of Pediatrics recommends room-sharing without bed-sharing. This means placing your baby's crib, bassinet, or play yard in your bedroom. This arrangement allows for easier monitoring, comforting, and feeding. It is important to ensure that your baby's sleep environment is safe by following these guidelines:
- Use a firm mattress and cover it with a snug-fitting sheet.
- Do not put anything in the bassinet or crib, including pillows, toys, quilts, unfitted sheets, or blankets.
- Keep your baby away from secondhand smoke, as it increases the risk of SIDS.
- Avoid using weighted blankets.
- Ensure your baby is dressed appropriately for sleep, avoiding overheating.
Remember, it is always best to consult a reliable pediatric care specialist for specific advice and guidance regarding your baby's sleep positions and safety.
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Reflux
It is relatively common for newborns to throw up while sleeping, and it is usually nothing to worry about. In fact, healthy babies who sleep on their backs are less likely to choke on their vomit than those who sleep on their tummies or sides. This is because, when sleeping on the back, the upper respiratory airways are positioned above the oesophagus (food pipe), and gravity helps to keep any fluid or milk that has been regurgitated or vomited at the lowest level, where it can be easily swallowed.
While reflux is usually harmless, there are some instances where medical attention may be necessary. If your baby is happy, healthy, and gaining weight, they likely do not need to see a doctor for reflux. However, if you have any concerns or if the condition persists or worsens, it is always best to consult your healthcare provider. In some cases, a doctor may recommend treatments such as thickening powders or, for breastfed babies, medications that reduce stomach acid production. Very rarely, surgery may be required to strengthen the muscles and prevent milk from travelling back up.
It is important to note that vomiting can sometimes be a sign of a more serious condition in newborns. If your baby's vomiting is forceful and becomes projectile, or if it lasts for more than 24 hours, it is important to seek medical advice. Additionally, if you suspect an allergic reaction, such as swelling of the lips, eyes, or face, or changes in your baby's well-being after introducing a new food, stop feeding that food and seek medical advice immediately.
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Viral gastrointestinal infections
It is not uncommon for newborns to throw up while sleeping. However, if vomiting persists for more than 24 hours, it may be an indication of a more serious condition, such as pyloric stenosis, which requires medical attention. To prevent choking, it is recommended that newborns sleep on their backs.
Now, here is some detailed information on viral gastrointestinal infections:
The symptoms of viral gastroenteritis include watery diarrhoea, abdominal cramps, nausea or vomiting, and sometimes fever. In most cases, the symptoms last for a day or two but can occasionally persist for up to 14 days. The main complication to look out for is dehydration, characterised by excessive thirst, a dry mouth, deep yellow urine, and severe weakness, dizziness, or lightheadedness. Dehydration can be life-threatening for infants, older adults, and immunocompromised individuals.
There is no specific treatment for viral gastroenteritis. However, prevention is crucial, focusing on thorough handwashing, avoiding contaminated food and water, and practising good hygiene when sharing utensils, towels, or food with others. A rotavirus vaccine is available in some countries, including the United States, to prevent viral gastroenteritis in children.
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Pyloric stenosis
While it is not uncommon for newborns to throw up while sleeping, it could be a sign of an underlying condition. One such condition is pyloric stenosis. This is a problem that affects babies between birth and 6 months of age, with boys being more susceptible than girls. Pyloric stenosis causes forceful vomiting, which can lead to dehydration and electrolyte imbalance. The condition is characterized by a thickening or swelling of the pylorus, the muscle between the stomach and the intestines, which results in a narrowing of the opening from the stomach to the intestines. This blockage prevents food from moving from the stomach to the intestine and can cause constant hunger, belching, and colic in affected infants.
The most common symptom of pyloric stenosis is forceful, projectile vomiting. This type of vomiting is distinct from the usual spit-ups or "wet burps" that babies may have, as it involves large amounts of breast milk or formula being expelled several feet across a room. The vomit may appear curdled due to the milk remaining in the stomach and reacting with stomach acid. Affected infants may also exhibit constant hunger, as they are unable to eat properly due to the blockage.
To diagnose pyloric stenosis, a medical and family history, as well as a physical examination, are essential. Radiographic studies, such as ultrasounds and upper GI series, are also commonly used to visualize the thickened pylorus and narrowed outlet. On examination, palpation of the abdomen may reveal a mass in the upper central region, known as the "olive," which consists of the enlarged pylorus.
The first step in treating pyloric stenosis is to stabilize the baby by correcting dehydration and electrolyte imbalances through intravenous (IV) fluid administration. Surgery, known as pyloromyotomy, is then performed to divide the muscle of the pylorus and open up the gastric outlet. Laparoscopic surgery, which involves small incisions and tiny scopes, can minimize scarring, reduce potential infections, and improve recovery time.
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Allergic reactions
It is not uncommon for newborns to throw up while sleeping. This can be due to various factors, including a weak immune system, viral infections, or even asthma. However, if you suspect that your newborn is having an allergic reaction, it is crucial to act promptly and seek medical advice. Allergic reactions in newborns can be dangerous and require immediate attention.
Signs and Symptoms of Allergic Reactions
- Swelling of the lips, eyes, or face: If you notice any swelling in these areas, it could indicate an allergic reaction. This is often one of the first visible signs.
- Hives or welts: The appearance of hives or welts on the skin suggests a potential allergic reaction. Hives are raised, itchy red bumps that can occur anywhere on the body.
- Vomiting: If your newborn is throwing up while sleeping, it might be a sign of an allergic reaction, especially if it occurs after introducing new food. Vomiting can also be caused by other factors, such as motion sickness, reflux, or a viral infection.
- Respiratory issues: Allergic reactions can cause respiratory distress, including coughing, wheezing, and difficulty breathing. If your newborn exhibits any breathing difficulties, seek immediate medical attention.
- Changes in behavior: If your newborn becomes very unsettled or exhibits unusual behavior after consuming a particular food, it could be a sign of an allergic reaction. Trust your instincts, and if you suspect an allergy, discontinue that food item and consult a healthcare professional.
Preventing and Managing Allergic Reactions
- Identify and eliminate triggers: If you suspect a specific food or substance is causing an allergic reaction, remove it from your newborn's environment. This may involve keeping a food journal to help identify any patterns or specific allergens.
- Breastfeeding: Breast milk is generally well-tolerated and can help reduce the risk of allergic reactions in newborns. Exclusive breastfeeding for the first six months is recommended by various health organizations.
- Introduce solids gradually: When introducing solid foods, start with a small amount and monitor your newborn's reaction. Gradually increase the amount and variety of foods over time.
- Consult a healthcare professional: If you suspect an allergic reaction, seek medical advice promptly. A healthcare professional can help identify the allergen, provide guidance on managing allergies, and prescribe necessary treatments or medications.
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Frequently asked questions
Yes, newborn vomiting is often normal and not a cause for concern. The valve between the stomach and esophagus relaxes while sleeping, leading to throwing up more often at night than during the day.
It is recommended that newborns sleep on their back to provide airway protection and prevent choking.
Newborn vomiting could be due to a viral gastrointestinal infection, certain medications, motion sickness, or an allergic reaction to food.
If newborn vomiting is accompanied by a fever, or if the symptoms are not improving and spit-ups are becoming more frequent, consult a pediatrician to rule out any underlying conditions.
Keep newborns hydrated with small amounts of formula or breast milk. Avoid solid foods to reduce the risk of choking and ease the stomach's burden.











































