This condition, called lymphoid hyperplasia, may also be associated with a variety of inflammatory and infectious diseases, such as Crohn's disease, gastroenteritis, respiratory infections, mononucleosis, and measles.
Ensuring that food is prepared safely well-cooked and unspoiled can prevent bacterial gastroenteritis, but may not be effective against viral gastroenteritis.
In developed nations, including the United States, bacterial gastroenteritis may result from contaminated water supplies, improperly processed or preserved foods, or person-to-person contact in places such as child-care centers.
Dimicoli, S., et al. "Complete Recovery from Cryptosporidium parvum Infection with Gastroenteritis and Sclerosing Cholangitis after Successful Bone Marrow Transplantation in Two Brothers with X-Linked Hyper-IgM Syndrome."
Lactose intolerance can be caused by some diseases of the digestive system (for example, celiac sprue and gastroenteritis) and by injuries to the small intestine that result in a decreased production of lactase.