Milk allergy is an adverse immune reaction to one or more proteins in cow's milk. It is one of the most common food allergies in children, though it can also affect adults. Unlike lactose intolerance, which involves digestive issues due to a lack of the enzyme lactase, a milk allergy involves the immune system and can cause a range of reactions, from mild to severe. The immune system mistakenly identifies milk proteins as harmful invaders and releases histamines and other chemicals to combat them, leading to various symptoms.
Symptoms of milk allergy can manifest within minutes to hours after consuming milk or dairy products. Common symptoms include hives, wheezing, itching, and swelling of the lips, face, and throat. Gastrointestinal symptoms like stomach cramps, diarrhea, and vomiting may also occur. In some cases, milk allergy can cause anaphylaxis, a severe and potentially life-threatening reaction characterized by difficulty breathing, a rapid drop in blood pressure, and loss of consciousness. Chronic symptoms can include eczema, persistent coughing, or issues related to growth and development in children.
Treatment for milk allergy primarily involves strict avoidance of milk and dairy products. Reading food labels carefully and asking about ingredients when eating out is crucial. For individuals at risk of severe reactions, carrying an epinephrine auto-injector (EpiPen) is essential. In some cases, healthcare providers may recommend other medications such as antihistamines to manage milder symptoms. Ongoing research is exploring the possibility of desensitization therapies, which involve gradually introducing small amounts of the allergen under medical supervision to build tolerance. Regular follow-up with an allergist can help manage the condition and monitor for any changes.
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