After drinking goat’s milk, frequent diarrhea may be caused by lactose intolerance, acute gastroenteritis, food allergies and other factors. 1. Lactose intolerance: Although the lactose in goat’s milk is lower than that in cow’s milk and human milk, some lactose intolerant patients will still suffer from abdominal pain, diarrhea, bloating and nausea after drinking goat’s milk due to the lack of lactase. 2. Acute gastroenteritis: Drinking spoiled or bacterial infected goat’s milk can lead to acute gastroenteritis, followed by abdominal pain, diarrhea, nausea, vomiting and other symptoms. 3. Food allergy: people who are allergic to goat’s milk can experience abdominal pain, diarrhea, nausea and other gastrointestinal symptoms after drinking goat’s milk, which can be accompanied by itchy skin, respiratory distress and other symptoms. If you have frequent diarrhea after drinking goat’s milk, it is recommended that you go to the hospital and ask the doctor to make a judgment and identify the cause.