The symptoms of a milk allergy are multiple, such as an allergy related to cow's milk, as this type of food allergy is the most common among young children and infants, as people with a cow's milk allergy also react to the milk of buffalo, goats, as well as sheep, and its symptoms on the skin include itching, the appearance of redness in the face, a rash, the appearance of ulcers in the mouth, the appearance of dark circles around the eyes, swelling of the lips, swelling of the mouth, or swelling of the tongue, swelling of the face or swelling.

Symptoms of skin allergy to milk

A skin allergy to milk is an allergic reaction to the protein found in the components of milk. This allergy is clearly visible on the skin and appears as follows:

• It appears as a rash, itching and eczema as well. 
• It can be a swelling of the skin, and its symptoms appear minutes after the person consumes the allergic milk, and in other cases they appear hours after consuming it.
• Symptoms appear when eating any dairy products. 
• Some people with milk allergy experience more severe symptoms, such as difficulty breathing and wheezing. 
• The person suffers from shortness of breath, and other symptoms such as nausea, diarrhea, cramps, cough, and runny nose

Respiratory symptoms of milk allergy

Milk allergy affects the respiratory system, and the presence of an allergy can be confirmed through symptoms affecting the respiratory system, which range from mild to severe, and are as follows:

• Runny nose.
• Having nasal congestion.
• Suffering from sneezing.
• Exposure to the problem of cough, which may be dry or contain phlegm.
• Wheezing in the chest area, which is a sharp or whistling sound that occurs when breathing.
• The person's eyes are watery.
• Feeling itchy in the eye area.
• Feeling short of breath.
• Sinusitis.
• Frequent colds.
• صعوبة في التنفس.
• Difficulty breathing air.
• Difficulty exhaling.
• Difficulty swallowing.

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Digestive symptoms of milk allergy

A person with a milk allergy will develop a number of digestive symptoms within minutes after consuming milk or any dairy products. In some cases, symptoms appear hours later, and the severity of symptoms varies from one person to another, which include the following:

• Feeling pain in the abdominal area, where the pain is mild or severe, accompanied by cramps.
• Exposure to mild or severe diarrhea, which may be accompanied in some cases by bloody stools.
• Exposure to nausea and vomiting.
• Abdominal bloating due to gas accumulation.
• Facing the problem of difficulty in digestion.
• Inability to absorb nutrients.

Symptoms of milk allergy in adults

Symptoms of milk allergy in adults range from mild to severe, and include the following:

• Skin symptoms: These symptoms include a skin rash known as urticaria, itching or swelling of the lips, tongue, or throat, and eczema.
• Digestive system symptoms: experiencing nausea and vomiting, experiencing diarrhea, feeling abdominal pain, abdominal bloating and gas.
• Respiratory symptoms: extreme difficulty in breathing, wheezing, shortness of breath, and cough.
• Symptoms of lactose intolerance: Sometimes symptoms appear as a result of lactose intolerance and are related to allergies, including digestive system symptoms that include diarrhea, nausea, vomiting, a feeling of abdominal pain, and bloating and gas in the abdomen.
• Other symptoms: swelling in the body, feeling dizzy or experiencing a drop in blood pressure, and loss of consciousness.

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Symptoms of milk allergy in children

Children who suffer from a milk allergy develop symptoms minutes or hours after consuming milk or eating a dairy product. There are mild symptoms and severe symptoms. Here are the details:

Mild symptoms

• A skin rash that appears as red spots or swollen blisters called urticaria.
• Serious cases of eczema, which is dryness and redness of the skin, accompanied by severe itching.
• Swelling in the face or lip area, or swelling in the area around the eyes.
• The presence of diarrhea accompanied by blood or mucus.
• Vomiting is either frequent or infrequent.
• The presence of abdominal pain or colic, which causes the child to cry.
• Abdominal bloating, accompanied by pain and gas.
• Suffering when breathing, which is accompanied by wheezing, wheezing in the chest, or coughing.
• Exposure to shortness of breath, which is mild in some cases and severe in others.
• Experiencing a runny nose with itching or congestion.
• Exposure to a persistent cough accompanied by a loud sound when breathing.
• Watery eyes with an itchy and runny feeling.
• There is a change in body weight, including difficulty gaining or losing weight.

Severe symptoms

• Difficult breathing, which causes difficulty speaking.
• The throat or tongue becomes swollen, making it difficult for the child to swallow or breathe normally.
• The child experiences dizziness or loss of consciousness, with the body limp and the skin pale.
• High body temperature and accompanied by inflammation or severe secretions in the eye area.
• The child feels more tired and exhausted, which is accompanied by pain in the head area or pain in the muscle area.
• Convulsions occur to the child, accompanied by vomiting or diarrhea.

Learn about: Skin allergy to food Is food your enemy?

When do symptoms of milk allergy appear?

The time when the symptoms of milk allergy appear varies among people. In general, they begin to appear a few minutes after consuming milk or dairy products, or a few hours after eating them. The allergy symptoms may be mild or severe, and the specific time for the allergy symptoms to appear is approximately within half an hour to two hours after consuming milk. 

As for the allergic reaction, it is mild for some and serious for others. If symptoms of a milk allergy appear in your child, you should consult a specialist doctor immediately if there is an allergy to milk and refrain from consuming milk and dairy products.

When should you consult a doctor?

It is necessary to quickly consult a doctor when there is suspicion of an allergy to milk and the appearance of severe symptoms such as difficulty breathing and swelling of the throat area. It is necessary to visit the treating physician if symptoms appear after consuming milk, and if there is a family history of food allergy, one must contact the doctor. 

There are some symptoms that require immediate medical intervention and consultation, including shivering and wheezing in the chest, and a feeling of itching and tingling in the area around the lips or around the mouth with swelling of the lips or tongue, or when swelling occurs in the throat, or exposure to coughing and severe difficulty breathing, or vomiting, and also if the person suffers from diarrhea or nausea or feels stomach cramps, or if the stool is loose, or if there is blood in the stool. 

Another serious symptom is low blood pressure, and from here the doctor does the necessary work in terms of diagnosing the allergy and detecting the seriousness of the allergy while providing appropriate treatment for the condition, and providing support and advice to the patient so that the milk allergy is managed properly and effectively.

Frequently asked questions:

What is the difference between milk and lactose allergy?

Milk allergy is different from lactose, as it is an allergic reaction of the immune system to milk proteins, including casein and whey. However, lactose intolerance is due to the difficulty of digesting the sugar lactose, as a result of a deficiency in the enzyme lactase, which plays a major role in the process of digesting the lactose sugar in milk.

Is there a milk allergy test?

There are many diagnostic tests for milk allergy, including skin tests and screening tests, and there are also blood tests and tests for food counseling, as well as tests for lactose tolerance.

What is the best milk for someone who suffers from a milk allergy?

There are alternatives to milk for those who suffer from milk allergies, the best of which is plant milk, including soy milk and almond milk, as well as oat milk and rice milk, including coconut milk. As for children who suffer from milk allergy, there are specific types of formula milk especially for those cases, including allergy milk (HA), as well as intensively hydrolyzed milk, and most importantly breastfeeding.

After we have revealed the most important symptoms of skin milk allergy, we clarify the necessity of children with milk allergy avoiding eating all types of milk and manufactured products that include milk protein in their ingredients. There are multiple sources of calcium other than dairy products, including dark leafy vegetables and nuts as well, in addition to seeds rich in calcium. It is important to visit a specialist doctor for examination and to provide appropriate treatment methods.

Sources:

Milk Allergy – clevelandclinic