Difference Between Lactose Intolerance and Milk Allergy. Lactose intolerance is caused by not having enough of the enzyme lactase, which is needed to break down lactose, the sugar found in milk and other dairy products. Milk allergy is a true food allergy caused by an allergic reaction to the protein in milk.
Another difference is that with cow's milk allergy, even a small amount of cow's milk protein could give your baby an allergic reaction. In contrast, many people with lactose intolerance can often eat small amounts of milk products without noticing any symptoms.
Ann Allergy Asthma Immunol. ... Cow's milk allergy versus cow milk intolerance. ... Highlighting the differences in clinical and laboratory findings between CMA ... Lactose intolerance is generally a benign condition,
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