Signs & Symptoms of a Cow's Milk Protein Allergy

Signs & Symptoms of a Cow's Milk Protein Allergy
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Cow's milk allergies are a common condition in babies -- rare in adults -- that occurs in approximately one in every 50 babies, according to Children, Youth and Women's Health Services. However, most babies grow out of the allergy after a few years. Milk allergies are an immune system response to casein and whey, two proteins present in cow's milk. Avoiding milk and products containing milk proteins is the only way to avoid the symptoms of an allergic reaction to milk proteins.

Immediate Reactions: Hives, Rash, Itchiness

Symptoms that appear within a few seconds or minutes after ingesting cow's milk proteins are called immediate reactions. These reactions generally affect the skin and may include hives, rash, itchiness and redness. Respiratory problems may also occur, such as wheezing, a high-pitched whistling while breathing, and vomiting, according to MayoClinic.com.

Delayed Reactions: Bloating, Abdominal Cramps, Low Weight Gain

Delayed reactions to cow's milk proteins develop more slowly. Signs and symptoms may not present for several hours to over a day. Gastrointestinal symptoms include diarrhea and vomiting, excessive gas, bloating and abdominal cramps. Other symptoms include hives and rashes, a runny nose, watery eyes and coughing or wheezing. Babies may show signs of irritability, low or no weight gain and a failure to thrive due to nutritional deficiencies, according to babiesonline.com.

Anaphylaxis

Rarely, a severe and potentially life-threatening allergic reaction could occur to cow's milk proteins called anaphylaxis. Anaphylaxis occurs immediately after exposure to the allergen, generally within seconds or minutes. It's a whole-body reaction that requires immediate medical attention. Symptoms include airway constriction and swelling of the throat that could severely impair breathing, severe vomiting and facial flushing, anxiety and confusion. Complications of an anaphylactic reaction include cardiac and respiratory arrest and shock, according to MedlinePlus.

References

Article reviewed by Anton Alden Last updated on: Nov 22, 2010

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