Monica is experiencing nausea, diarrhea, and abdominal pain after eating dairy products. She is most likely experiencing _________.

Monica’s nausea, diarrhea, and abdominal pain could indicate that she is experiencing lactose intolerance. A milk allergy may have symptoms like hives, itching, swelling, and wheezing. However, lactose intolerance is not the same as an allergy because it does not affect the immune system. When lacking the enzyme “lactase,” a lactose intolerant person is unable to break down the sugar found in dairy products.