Thanks for your question. Your husband seems to be suffering from lactose intolerance
. It is inability to digest lactose which is found in milk or other dairy products. I do not know your husband's ethnicity , but it is common in asian, african people. As in your husband's case, symptoms usually start 30 minutes or 2 hours after eating or drinking dairy products. You did not mention about the stool, abdominal symptoms.I will advocate you not to take milk. If he is insisting on dairy products, then he should take buttermilk and cheeses (they have less lactose than milk),fermented milk products, such as yogurt,goat's milk,ice cream, milkshakes, and aged or hard cheeses,lactose-free milk and milk products.He may also take lactase enzymes in the form of chewable tablets. If symptoms do not get way with this, then he should undergo Ultrasonography
abdomen, stool pH ,lactose hydrogen breath test
, lactose tolerance test. I hope symptoms will get better only when he starts to avoid milk. Don't get worried. Nothing serious about the problem.Hope, I satisfied your queries.