Understanding Lactose Sensitivity Most people often refer lactose sensitivity to intolerance. But, experts don't agree. Sensitivity to lactose can be caused by several factors and each of them produces similar symptoms. Milk allergy occurs when your immune system couldn’t distinguish the proteins present in a dairy product. Symptoms include nausea, diarrhea, skin rash, di culty in breathing, swelling of the lips and abdominal cramps.
Irritable bowel syndrome is an intestinal disorder a ecting the large intestine. While the cause of IBS remains unknown, many people with IBS are also lactose intolerant. This is the reason why dairy tops the list of the foods to primarily avoid. The symptoms include diarrhea, constipation, bloating, gas and abdominal pain.