1 What is a cow's milk protein allergy?
2 And what is cow's milk protein intolerance?
- mediated by immunoglobulin E (IgE): usually causes skin lesions and the reaction is very fast, almost immediately after drinking the milk (minutes to 2 hours)
- not mediated by immunoglobulin E: what was previously known as intolerance to cow's milk proteins. Symptoms usually appear later (hours, days or weeks) after drinking milk and mainly affect the digestive system.