The Mayo Clinic indicates that a milk allergy is one of the most common of all food allergies in children. It is most commonly attributed to cow's milk, but other lactose products made from goat, sheep and buffalo milk can also cause a reaction. Symptoms of the allergy can vary, but in most cases the reaction occurs within a few minutes of consumption. Dairy allergy symptoms can range from mild to moderate. Sometimes the symptoms actually indicate lactose intolerance.
Immediate Effects
The Mayo Clinic explains that toddlers can experience an allergic reaction to milk as soon as it is consumed or shortly after. Symptoms may include hives on the skin, wheezing and/or vomiting. KidsHealth.org also notes that a toddler may gag or refuse dairy foods.
Progressive Symptoms
The amount of time it takes for more symptoms of dairy allergy to appear may vary for each child. Symptoms to look for include watery stools that may contain blood, diarrhea, abdominal cramps, coughing or wheezing, itchy skin rash, skin rash around the mouth and abnormal irritability.
Intolerance vs. Allergy
Some toddlers may report tummy pains or a feeling of excess fullness. This may be a sign of gas or bloating. The Mayo Clinic explains that these symptoms may be a sign of lactose intolerance instead of allergy. Allergies affect the immune system and cause reactions such as runny nose, wheezing and hives. Lactose intolerance impacts the digestive system only because the individual is unable to process the milk protein or lactose in the products.
Severe Allergic Reaction
A severe allergic reaction can be fatal if left untreated. The Mayo Clinic notes that milk allergy rarely results in anaphylaxis, a severe allergic reaction. Symptoms to look for include the constriction of airways because of facial, oral and throat swelling; flushing of the face; itching, and/or shock because of a severe drop in blood pressure.
