Am I lactose intollerant?

When I eat too much ice cream, drink milk, or rice water I get stomach pains, not just nauseated but actually sharp sometimes like I swallowed a knife and I ALWAYS get extremely painful diarrhea afterwards.
I avoid ice cream the most, a little is okay much is makes me the sickest and I just don't like milk. But when I drink too much, again that happens. With yogurt, butter, sour cream, and creme cheese I seem to be fine. I love sour cream and eat a lot of it.
I've never eaten an extremely large quantitity of yogurt though...

If I drank about 24 fluid oz of dairy-related liquid I start to get sick (nauseated maybe diarrhea) not with water or soda or juice or anything else.

probably... i am lactose intollerant and that is sorta how i feel.... i just don't get diarrhea but i would go to a doctor and ask him/her.

It seems you are ...I am ....and I do get into the same situation when I drink alot of milk. The pain is because we lack the enzyme that breaks down the lactose in the dairy products and therefore the stomach and intestines work very hard to digest it and because it is unable to do so it breaks it down and that is how we get the major diarrhea.
Try to avoid the certain diary products that cause you the diarrhea and keep with you a medication for it and keep with you a good spasm killer..some thing like Buscopan plus which I adore for it's fast relief of the pain.

It sure sounds like it. I am lactose intolerant. Same & similar terrible symptoms. I hate it! I love ice cream. cheese pizza. mac and cheese. I can't eat as much anymore. I can stand the problems.
Then I found out about Lactase enzyme. Its made by many companies.

I have been using a fast acting dairy digestive supplement. Walmart has it under their own brand - equate. I take one caplet before having any dairy. I still have to be careful to avoid large amounts of dairy. But I can use this pill once in awhile to have a little ice cream or some pizza.

info on lactase enzyme

http://www.nutrasanus.com/lactase.html