Editing Lactose intolerance (section)

==Signs and symptoms==
The principal manifestation of lactose intolerance is an adverse reaction to products containing lactose (primarily milk), including abdominal [[bloating]] and [[cramps]], [[flatulence]], [[diarrhea]], [[nausea]], [[borborygmi]], and [[vomiting]] (particularly in [[adolescents]]). These appear one-half to two hours after consumption.<ref name=NIH2014Dig/> The severity of these signs and symptoms typically increases with the amount of lactose consumed; most lactose-intolerant people can tolerate a certain level of lactose in their diets without ill effects.<ref name="Savaiano and Levitt 1987" /><ref name="Madry et al 2011">{{cite journal | vauthors = Mądry E, Krasińska B, Woźniewicz MG, Drzymała-Czyż SA, Bobkowski W, Torlińska T, Walkowiak JA | title = Tolerance of different dairy products in subjects with symptomatic lactose malabsorption due to adult type hypolactasia | journal = Gastroenterology Review | volume = 5 | pages = 310–315 | year = 2011 | doi = 10.5114/pg.2011.25381 | doi-access = free }}</ref>

Because lactose intolerance is not an allergy, it does not produce [[Allergy#Signs and symptoms|allergy symptoms]] (such as itching, [[hives]], or [[anaphylaxis]]).