The most common symptoms include stomach pain, bloating, diarrhea, constipation, gas, nausea and vomiting.
If you have symptoms of lactose intolerance, a hydrogen breath test may help determine whether you have lactose malabsorption or your symptoms are caused by something else.
Can you become lactose intolerant all of a sudden?
top. Lactose intolerance can start suddenly, even if you’ve never had trouble with dairy products before. Symptoms usually start a half-hour to two hours after eating or drinking something with lactose.
How do I tell if I am lactose intolerant?
If you have lactose intolerance, your symptoms may include:
- Pain or cramps in the lower belly.
- Gurgling or rumbling sounds in the lower belly.
- Loose stools or diarrhea. Sometimes the stools are foamy.
- Throwing up.
How long do lactose intolerance symptoms last?
Symptoms can change over time and flare up, get better, or disappear. Along with the other symptoms, lactose intolerance can cause nausea. You usually start to feel bad between 30 minutes and 2 hours after you eat milk or other dairy products.
What helps lactose intolerance pain?
Over-the-counter pills or drops that contain lactase can be taken before meals to help alleviate or eliminate symptoms. For example, Lactaid pills or Lactaid milk allow many people to process dairy products without any difficulty, Balzora said.