What causes a milk allergy in babies

There is not a cure for milk allergies.

What causes a milk allergy in babies

The best management for every types of milk allergies and milk sensitivities is strict avoidance of dairy products. Since numerous infants develop milk allergies before being introduced to solid foods, your child's doctor may prescribe a

Heiner syndrome is a type of milk intolerance.

What causes a milk allergy in babies

It is not an allergy, and it manifests with coughing, ear infections, spitting blood, and/or weight loss.

Since there is a possibility of a severe reaction, oral food challenge should only be done in a medical setting.

Call triple zero () for an ambulance if your kid has the following symptoms. They could be having a severe allergic reaction and will need urgent medical attention.

  1. a swollen tongue
  2. vomiting
  3. wheezing or difficulty breathing
  4. they are pale and floppy or unconscious


It can be hard to know whether your kid has a dairy allergy or whether they own another illness, such as digestive issues or a GI infection.

Before your child's scheduled appointment with a pediatrician or allergist, it helps to hold a food diary and record your baby's symptoms.

Along with a medical history and your child's physical examination, several methods are used to diagnose milk allergies.

Skin Prick Test

A skin prick test, also commonly called a scratch test, involves placing a sample of milk on the skin. A skin reaction within 15 minutes is indicative of a milk allergy. However, because milk allergies are triggered by eating dairy rather than by touching milk, a negative reaction (no reaction) does not law out a milk allergy.

Blood Test

A blood test can identify high levels of immune cells and IgE, which may be suggestive of an allergy. However, EGIDs and FPIES may be associated with high levels of inflammatory cells, but not necessarily with high levels of IgE.

Oral Food Challenge

A common way of identifying food allergies is with a food challenge.

This is a test in which you would eliminate milk from your child's diet for a few weeks, and then a little quantity of milk would be introduced in the doctor's office to observe your child's reaction.

An oral food challenge is the most dependable way to identify FPIES, and it is also used in the diagnosis of IgE mediated dairy allergies and EGIDs.

Endoscopy and Colonoscopy

EGIDs may cause changes in the digestive organs, which can be seen with interventional tests such as endoscopy or colonoscopy. Endoscopy is a test in which a tube with a camera is placed in the mouth to glance at the upper parts of the digestive system, while colonoscopy is a test in which a tube with a camera is placed in the rectum to observe the colon.


An allergic reaction to dairy products may cause immediate effects or a delayed reaction after consuming milk.

There are a number of diverse symptoms that can develop.

Common effects of a milk allergy can include any of the following:

  1. Digestive problems
  2. Nasal allergy symptoms, such as a runny nose and watery eyes
  3. Abdominal pain and discomfort
  4. Eczema itchy, red patches on the skin
  5. Diarrhea
  6. Vomiting
  7. Hives
  8. Pain when swallowing
  9. Blood-streaked stools
  10. Asthma symptoms, such as wheezing

Milk Allergies in Infants

Babies don't own the ability to complain, so manifestations of a milk allergy can be hard to recognize.

A kid might be fussy, irritable, and weep. Because babies eat every few hours, it is always clear that the symptoms are related to eating.

Children may eventually experience weight loss due to digestive problems, vomiting, and diarrhea. Hold track of your baby's weight gain—stagnating weight or weight loss is typically described as failure to thrive, which is a serious problem that can affect a baby's development for the endless term.


Generally, milk allergies are not life-threatening.

But some children experience own severe reactions to milk.

Signs of a milk allergy-induced medical emergency include:

  1. Wheezing or difficulty breathing
  2. Swelling around the mouth or lips
  3. Anaphylaxis

What is milk intolerance and milk allergy?

Around 1 in 10 young children has a reaction when they drink cow’s milk. This could be because they own a lactose intolerance or a milk allergy. Milk allergy is more common than lactose intolerance in children under 5.

Lactose intolerance is a problem with the digestive system – it means your kid doesn’t own the enzyme needed to digest lactose, which is the sugar in milk.

Milk allergy, however, is a problem with the immune system — the body reacts to the protein in milk.

What causes a milk allergy in babies

An allergy generally involves other parts of the body as well as the stomach, and may cause symptoms such as a skin rash or swelling of the face.

Your doctor can confirm whether your kid is lactose-intolerant or has a milk allergy by doing some medical tests. Don’t use unproven tests such as Vega, kinesiology, Alcat or allergy elimination tests for children. A milk intolerance is unlikely to be the cause of mucus or coughing.

Many young children grow out of their intolerance or allergy. But don’t start giving them cow’s milk until your doctor tells you it’s safe to do so.

Lactose intolerance


Lactose is the sugar found in the milk produced by every mammals, including humans.

What causes a milk allergy in babies

Sometimes people don’t produce enough of the enzyme lactase in their gut to break below the lactose.

Very few babies own true lactose intolerance, a rare genetic condition where they’re born without any lactase enzymes at every. (This is called primary lactose intolerance). However, numerous people develop lactose intolerance later in life, after the age of 5. It is more common in Aboriginal Australians and people from Asia, Africa, the Middle East and some Mediterranean countries.

Babies and young children can become intolerant to milk if the lining of their gut is damaged by an illness such as gastroenteritis, or an allergy or intolerance to another food.

What causes a milk allergy in babies

This is called secondary lactose intolerance and will go away once the gut heals.

Symptoms and diagnosis

The symptoms of lactose intolerance in babies and children are:

All of these symptoms are common in babies and don’t necessarily mean they own lactose intolerance. But if your kid has diarrhoea and isn’t putting on weight, see your doctor. Don’t stop breastfeeding unless your doctor tells you to.

Tests include a breath test to measure the hydrogen in your child’s breath, or cutting out dairy to see if their symptoms improve.

This is known as an elimination diet.


If the lactose intolerance is caused by a tummy upset, hold on breastfeeding.

What causes a milk allergy in babies

If your baby is formula fed, talk to your doctor or kid and family health nurse before switching to low-lactose or lactose-free formula.

Older children will need to cut below on, but not eliminate, dairy foods from their diet. They can still own some cheeses, yogurt, calcium-fortified soy products, lactose-free milk, butter and cream. Your doctor or a dietitian will advise you on the best diet for your kid.


If you or your kid has a milk allergy, dairy products can trigger your allergies by activating your immune system.

Milk is present in a number of diverse foods, such as butter, cheese, ice cream, pudding, yogurt, custards, candies, sauces, granola bars, and protein powders.

Many foods may not list milk as an ingredient, but clearly state that they contain lactic yeast, ghee, whey, curd, or casein—all of which are made from milk.

Keep in mind that even flavored foods, such as butter-flavored popcorn or chocolate-flavored desserts, may contain some milk. Similarly, dairy substitutes, such as artificial cheese or margarine, may contain milk as well.

Surprise sources of milk can include deli slicers, which are used to cut meats and cheese.

And breaded foods love meat, vegetables (like tempura), and seafood may be dipped in milk.

There are several physiological mechanisms that facilitate an allergic reaction to milk.

Eosinophilic Gastrointestinal Disorders

Eosinophils are a type of white blood cell that is typically present in low numbers in the digestive tract. With an eosinophilic gastrointestinal disorder (EGID), these cells multiply, and they may attack the body when exposed to an allergy trigger.

Eosinophilic gastrointestinal (GI) disorders include:

  1. Eosinophilic gastritis (eosinophils are primarily located in the stomach)
  2. Eosinophilic gastroenteritis (eosinophils are primarily located in the stomach and little intestine)
  3. Eosinophilic esophagitis, EoE, (eosinophils are primarily located in the esophagus)
  4. Eosinophilic colitis (eosinophils are primarily located in the colon)

Symptoms of eosinophilic GI disorders may include trouble eating, diarrhea, and failure to thrive.

Food Protein-Induced Enterocolitis Syndrome (FPIES)

FPIES is a severe, systemic reaction to food that generally develops in infants within the first months of life.

It is often described as food intolerance, rather than an allergy.

Infants can develop this reaction from breastmilk or from some types of formula. It may also include a reaction to other foods besides milk, such as fruit, vegetables, potatoes, and/or seafood. FPIES is also common to soy-based formulas, and 40% of children with milk-induced FPIES will also react to soy.

This type of reaction generally causes digestive issues, such as vomiting, diarrhea, and blood-streaked stools.

It rarely causes systemic shock, which is characterized by extremely low blood pressure, heart failure, loss of consciousness, and is life-threatening.

Children generally grow out of FPIES by age three.

What Really Happens to Your Body When You Own a Food Intolerance?

Immunoglobulin E (IgE)- Mediated Milk Allergy

IgE is a type of antibody produced by your immune system. These antibodies activate immune cells and cause them to release histamine and other chemicals that cause inflammation.

Symptoms of classic IgE mediated food allergies typically appear within minutes of eating, and can include skin reactions, respiratory problems, or digestive issues.


Rates of dairy allergy vary widely in diverse parts of the world.

For example, the prevalence of dairy allergies in diverse countries is:

  1. United States: 1% to % of children under 6
  2. Israel: less than 1% of children
  3. Australia: More than 10% of one-year-olds

It is not clear why there are such diverse regional rates of dairy allergies.

There may be a genetic component contributing to the development of dairy allergies, but there is no single gene that has been found to be responsible.